{"id":361,"date":"2026-01-26T01:24:57","date_gmt":"2026-01-25T17:24:57","guid":{"rendered":"https:\/\/skwp.zeabur.app\/2026\/01\/26\/%e3%80%90vitest-react-%e6%b8%ac%e8%a9%a6%e6%95%99%e5%ad%b8%e3%80%9104-%e6%b8%ac%e8%a9%a6%e8%87%aa%e8%a8%82-hooks%ef%bc%9arenderhook-%e8%88%87-act\/"},"modified":"2026-01-26T01:24:57","modified_gmt":"2026-01-25T17:24:57","slug":"%e3%80%90vitest-react-%e6%b8%ac%e8%a9%a6%e6%95%99%e5%ad%b8%e3%80%9104-%e6%b8%ac%e8%a9%a6%e8%87%aa%e8%a8%82-hooks%ef%bc%9arenderhook-%e8%88%87-act","status":"publish","type":"post","link":"https:\/\/blog.itsmygo.uk\/wordpress\/2026\/01\/26\/%e3%80%90vitest-react-%e6%b8%ac%e8%a9%a6%e6%95%99%e5%ad%b8%e3%80%9104-%e6%b8%ac%e8%a9%a6%e8%87%aa%e8%a8%82-hooks%ef%bc%9arenderhook-%e8%88%87-act\/","title":{"rendered":"\u3010Vitest React \u6e2c\u8a66\u6559\u5b78\u3011#04 \u6e2c\u8a66\u81ea\u8a02 Hooks\uff1arenderHook \u8207 act"},"content":{"rendered":"\n<div id=\"quiz-basic\">\n<style>\n#quiz-basic .question {\n        background: white;\n        border-radius: 8px;\n        padding: 20px;\n        margin: 20px 0;\n        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);\n      }#quiz-basic .question h3 {\n        margin-top: 0;\n        color: #333;\n      }#quiz-basic .options {\n        list-style: none;\n        padding: 0;\n      }#quiz-basic .options li {\n        padding: 12px 15px;\n        margin: 8px 0;\n        border: 2px solid #ddd;\n        border-radius: 6px;\n        cursor: pointer;\n        transition: all 0.2s;\n      }#quiz-basic .options li:hover:not(.disabled) {\n        border-color: #4caf50;\n        background: #f0fff0;\n      }#quiz-basic .options li.correct {\n        border-color: #4caf50;\n        background: #e8f5e9;\n      }#quiz-basic .options li.wrong {\n        border-color: #f44336;\n        background: #ffebee;\n      }#quiz-basic .options li.disabled {\n        cursor: default;\n        opacity: 0.7;\n      }#quiz-basic .options li.show-answer {\n        border-color: #4caf50;\n        background: #e8f5e9;\n      }#quiz-basic .feedback {\n        margin-top: 15px;\n        padding: 12px;\n        border-radius: 6px;\n        display: none;\n      }#quiz-basic .feedback.correct {\n        background: #e8f5e9;\n        color: #2e7d32;\n        display: block;\n      }#quiz-basic .feedback.wrong {\n        background: #ffebee;\n        color: #c62828;\n        display: block;\n      }#quiz-basic .score {\n        text-align: center;\n        font-size: 1.5em;\n        padding: 20px;\n        background: white;\n        border-radius: 8px;\n        margin-top: 20px;\n      }#quiz-basic .code-block {\n        background: #1e1e1e;\n        color: #d4d4d4;\n        padding: 14px;\n        border-radius: 6px;\n        font-family: \"Monaco\", \"Consolas\", \"Courier New\", monospace;\n        font-size: 0.9em;\n        overflow-x: auto;\n        margin: 12px 0;\n        white-space: pre-wrap;\n      }\n<\/style>\n<h1>\u6e2c\u9a57\uff1a\u6e2c\u8a66\u81ea\u8a02 Hooks\uff1arenderHook \u8207 act<\/h1>\n    <p>\u5171 5 \u984c\uff0c\u9ede\u9078\u7b54\u6848\u5f8c\u6703\u7acb\u5373\u986f\u793a\u7d50\u679c<\/p>\n\n    <div class=\"question\" id=\"q1\">\n      <h3>1. \u70ba\u4ec0\u9ebc\u9700\u8981\u4f7f\u7528 <code>renderHook<\/code> \u4f86\u6e2c\u8a66\u81ea\u8a02 Hook\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(1, 'A', 'B')\">A. \u56e0\u70ba Hook \u57f7\u884c\u901f\u5ea6\u592a\u5feb\uff0c\u9700\u8981\u7279\u6b8a\u5de5\u5177\u4f86\u6355\u6349\u7d50\u679c<\/li>\n        <li onclick=\"checkAnswer(1, 'B', 'B')\">B. \u56e0\u70ba Hook \u4e0d\u80fd\u76f4\u63a5\u547c\u53eb\uff0c\u5fc5\u9808\u5728 React \u5143\u4ef6\u88e1\u9762\u4f7f\u7528<\/li>\n        <li onclick=\"checkAnswer(1, 'C', 'B')\">C. \u56e0\u70ba Hook \u6703\u81ea\u52d5\u7522\u751f DOM \u5143\u7d20\uff0c\u9700\u8981\u7279\u6b8a\u8655\u7406<\/li>\n        <li onclick=\"checkAnswer(1, 'D', 'B')\">D. \u56e0\u70ba Hook \u53ea\u80fd\u5728 TypeScript \u74b0\u5883\u4e2d\u57f7\u884c<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb1\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q2\">\n      <h3>2. <code>renderHook<\/code> \u56de\u50b3\u7684\u7269\u4ef6\u4e2d\uff0c<code>result.current<\/code> \u4ee3\u8868\u4ec0\u9ebc\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(2, 'A', 'A')\">A. Hook \u76ee\u524d\u56de\u50b3\u7684\u503c<\/li>\n        <li onclick=\"checkAnswer(2, 'B', 'A')\">B. Hook \u7684\u521d\u59cb\u53c3\u6578<\/li>\n        <li onclick=\"checkAnswer(2, 'C', 'A')\">C. Hook \u7684\u57f7\u884c\u6b21\u6578<\/li>\n        <li onclick=\"checkAnswer(2, 'D', 'A')\">D. Hook \u7684\u932f\u8aa4\u72c0\u614b<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb2\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q3\">\n      <h3>3. \u70ba\u4ec0\u9ebc\u9700\u8981\u4f7f\u7528 <code>act<\/code> \u4f86\u5305\u88f9\u72c0\u614b\u66f4\u65b0\u64cd\u4f5c\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(3, 'A', 'C')\">A. \u70ba\u4e86\u8b93\u6e2c\u8a66\u7a0b\u5f0f\u78bc\u66f4\u5bb9\u6613\u95b1\u8b80<\/li>\n        <li onclick=\"checkAnswer(3, 'B', 'C')\">B. \u70ba\u4e86\u907f\u514d React \u62cb\u51fa\u932f\u8aa4\u8a0a\u606f<\/li>\n        <li onclick=\"checkAnswer(3, 'C', 'C')\">C. \u56e0\u70ba React \u72c0\u614b\u66f4\u65b0\u662f\u975e\u540c\u6b65\u7684\uff0c\u9700\u8981\u78ba\u4fdd\u66f4\u65b0\u5b8c\u6210\u5f8c\u518d\u65b7\u8a00<\/li>\n        <li onclick=\"checkAnswer(3, 'D', 'C')\">D. \u70ba\u4e86\u81ea\u52d5\u8a18\u9304\u72c0\u614b\u8b8a\u5316\u7684\u6b77\u53f2<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb3\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q4\">\n      <h3>4. \u6e2c\u8a66\u542b\u6709 <code>useEffect<\/code> cleanup \u51fd\u5f0f\u7684 Hook \u6642\uff0c\u61c9\u8a72\u4f7f\u7528\u54ea\u500b\u65b9\u6cd5\u4f86\u6a21\u64ec\u5143\u4ef6\u5378\u8f09\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(4, 'A', 'B')\">A. <code>result.cleanup()<\/code><\/li>\n        <li onclick=\"checkAnswer(4, 'B', 'B')\">B. <code>unmount()<\/code><\/li>\n        <li onclick=\"checkAnswer(4, 'C', 'B')\">C. <code>rerender(null)<\/code><\/li>\n        <li onclick=\"checkAnswer(4, 'D', 'B')\">D. <code>act(() => null)<\/code><\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb4\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q5\">\n      <h3>5. \u6e2c\u8a66\u4f7f\u7528 <code>setTimeout<\/code> \u6216 <code>setInterval<\/code> \u7684 Hook\uff08\u5982 useDebounce\uff09\u6642\uff0c\u61c9\u8a72\u642d\u914d\u4ec0\u9ebc\u6280\u8853\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(5, 'A', 'D')\">A. \u4f7f\u7528 <code>await new Promise<\/code> \u7b49\u5f85\u771f\u5be6\u6642\u9593\u7d93\u904e<\/li>\n        <li onclick=\"checkAnswer(5, 'B', 'D')\">B. \u76f4\u63a5\u7528 <code>rerender<\/code> \u5f37\u5236\u66f4\u65b0<\/li>\n        <li onclick=\"checkAnswer(5, 'C', 'D')\">C. \u4f7f\u7528 <code>waitFor<\/code> \u7121\u9650\u7b49\u5f85<\/li>\n        <li onclick=\"checkAnswer(5, 'D', 'D')\">D. \u4f7f\u7528 fake timers \u642d\u914d <code>vi.advanceTimersByTime()<\/code><\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb5\"><\/div>\n    <\/div>\n\n    <div class=\"score\" id=\"score\" style=\"display:none;\"><\/div>\n<script>\n\n      let answered = 0;\n      let correct = 0;\n      const total = 5;\n      const explanations = {\n        1: \"Hook \u662f React \u7684\u7279\u6b8a\u51fd\u5f0f\uff0c\u53ea\u80fd\u5728 React \u5143\u4ef6\u6216\u5176\u4ed6 Hook \u5167\u90e8\u547c\u53eb\u3002<code>renderHook<\/code> \u5e6b\u4f60\u5efa\u7acb\u4e00\u500b\u96b1\u5f62\u7684\u6e2c\u8a66\u5143\u4ef6\uff0c\u8b93\u4f60\u5c08\u6ce8\u5728 hook \u908f\u8f2f\u4e0a\uff0c\u4e0d\u9700\u8981\u6bcf\u6b21\u90fd\u624b\u52d5\u5beb\u6e2c\u8a66\u5143\u4ef6\u3002\",\n        2: \"<code>result.current<\/code> \u7528\u4f86\u53d6\u5f97 hook \u76ee\u524d\u7684\u56de\u50b3\u503c\u3002\u9664\u6b64\u4e4b\u5916\uff0c<code>renderHook<\/code> \u9084\u6703\u56de\u50b3 <code>rerender()<\/code>\uff08\u91cd\u65b0\u57f7\u884c hook\uff09\u548c <code>unmount()<\/code>\uff08\u6a21\u64ec\u5143\u4ef6\u5378\u8f09\uff09\u3002\",\n        3: \"React \u7684\u72c0\u614b\u66f4\u65b0\u662f\u975e\u540c\u6b65\u7684\u3002\u6c92\u6709 <code>act<\/code> \u5305\u88f9\uff0c\u65b7\u8a00\u53ef\u80fd\u5728\u72c0\u614b\u66f4\u65b0\u5b8c\u6210\u4e4b\u524d\u5c31\u57f7\u884c\u4e86\uff0c\u5c0e\u81f4\u6e2c\u8a66\u7d50\u679c\u4e0d\u7a69\u5b9a\u6216\u5931\u6557\u3002\",\n        4: \"<code>renderHook<\/code> \u56de\u50b3\u7684 <code>unmount()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u6a21\u64ec\u5143\u4ef6\u5378\u8f09\uff0c\u89f8\u767c <code>useEffect<\/code> \u7684 cleanup \u51fd\u5f0f\u57f7\u884c\uff0c\u7528\u4f86\u9a57\u8b49\u6e05\u7406\u908f\u8f2f\u662f\u5426\u6b63\u78ba\u904b\u4f5c\u3002\",\n        5: \"\u6e2c\u8a66 debounce \u6216\u6d89\u53ca\u8a08\u6642\u5668\u7684 Hook \u6642\uff0c\u9700\u8981\u4f7f\u7528 <code>vi.useFakeTimers()<\/code> \u642d\u914d <code>vi.advanceTimersByTime()<\/code> \u4f86\u63a7\u5236\u6642\u9593\u6d41\u901d\uff0c\u907f\u514d\u6e2c\u8a66\u7b49\u5f85\u771f\u5be6\u6642\u9593\u3002\u8a18\u5f97\u5728 <code>act<\/code> \u4e2d\u547c\u53eb <code>advanceTimersByTime<\/code>\u3002\"\n      };\n\n      function checkAnswer(qNum, selected, correctAns) {\n        const question = document.getElementById(\"q\" + qNum);\n        if (question.classList.contains(\"answered\")) return;\n\n        question.classList.add(\"answered\");\n        answered++;\n\n        const options = question.querySelectorAll(\".options li\");\n        options.forEach((opt) => {\n          opt.classList.add(\"disabled\");\n          if (opt.textContent.startsWith(correctAns + \".\")) {\n            opt.classList.add(\"show-answer\");\n          }\n        });\n\n        const feedback = document.getElementById(\"fb\" + qNum);\n        if (selected === correctAns) {\n          correct++;\n          feedback.className = \"feedback correct\";\n          feedback.innerHTML = \"\u2713 \u6b63\u78ba\uff01\" + explanations[qNum];\n        } else {\n          feedback.className = \"feedback wrong\";\n          feedback.innerHTML =\n            \"\u2717 \u932f\u8aa4\u3002\u6b63\u78ba\u7b54\u6848\u662f \" + correctAns + \"\u3002\" + explanations[qNum];\n          options.forEach((opt) => {\n            if (opt.textContent.startsWith(selected + \".\")) {\n              opt.classList.add(\"wrong\");\n            }\n          });\n        }\n\n        if (answered === total) {\n          const scoreDiv = document.getElementById(\"score\");\n          scoreDiv.style.display = \"block\";\n          scoreDiv.innerHTML =\n            \"\u6e2c\u9a57\u5b8c\u6210\uff01\u5f97\u5206\uff1a\" +\n            correct +\n            \" \/ \" +\n            total +\n            (correct === total\n              ? \" \ud83c\udf89 \u5168\u5c0d\uff01\"\n              : correct >= Math.ceil(total * 0.6)\n                ? \" \ud83d\udc4d \u4e0d\u932f\uff01\"\n                : \" \ud83d\udcda \u518d\u8907\u7fd2\u4e00\u4e0b\u5427\");\n        }\n      }\n    \n<\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u53e5\u8a71\u8aaa\u660e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528 <code>renderHook<\/code> \u55ae\u7368\u6e2c\u8a66 hook \u908f\u8f2f\uff0c\u7528 <code>act<\/code> \u78ba\u4fdd\u72c0\u614b\u66f4\u65b0\u5b8c\u6210\u518d\u65b7\u8a00\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u70ba\u4ec0\u9ebc\u9700\u8981 renderHook\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hook \u4e0d\u80fd\u76f4\u63a5\u547c\u53eb\uff0c\u5fc5\u9808\u5728 React \u5143\u4ef6\u88e1\u9762\u4f7f\u7528\u3002\u4f46\u70ba\u4e86\u6e2c\u8a66 hook \u908f\u8f2f\uff0c\u6bcf\u6b21\u90fd\u5beb\u4e00\u500b\u6e2c\u8a66\u5143\u4ef6\u592a\u9ebb\u7169\u3002<\/p>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ \u4e0d\u597d\uff1a\u6bcf\u6b21\u90fd\u8981\u5beb\u6e2c\u8a66\u5143\u4ef6<\/span>\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">TestComponent<\/span>(<span class=\"hljs-params\"><\/span>) <\/span>{\n  <span class=\"hljs-keyword\">const<\/span> result = useCounter();\n  <span class=\"hljs-keyword\">return<\/span> <span class=\"xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span>&gt;<\/span>{result.count}<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span><\/span>;\n}\n\n<span class=\"hljs-comment\">\/\/ \u597d\uff1a\u7528 renderHook \u76f4\u63a5\u6e2c\u8a66<\/span>\n<span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useCounter());\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e00\u53e5\u8a71<\/strong>\uff1a<code>renderHook<\/code> \u5e6b\u4f60\u5efa\u7acb\u4e00\u500b\u96b1\u5f62\u7684\u6e2c\u8a66\u5143\u4ef6\uff0c\u8b93\u4f60\u5c08\u6ce8\u5728 hook \u908f\u8f2f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6700\u5c0f\u7bc4\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f85\u6e2c\u8a66\u7684 Hook<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useCounter.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { useState } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\n\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">useCounter<\/span>(<span class=\"hljs-params\">initial = <span class=\"hljs-number\">0<\/span><\/span>) <\/span>{\n  <span class=\"hljs-keyword\">const<\/span> &#91;count, setCount] = useState(initial);\n\n  <span class=\"hljs-keyword\">const<\/span> increment = <span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> setCount(<span class=\"hljs-function\"><span class=\"hljs-params\">c<\/span> =&gt;<\/span> c + <span class=\"hljs-number\">1<\/span>);\n  <span class=\"hljs-keyword\">const<\/span> decrement = <span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> setCount(<span class=\"hljs-function\"><span class=\"hljs-params\">c<\/span> =&gt;<\/span> c - <span class=\"hljs-number\">1<\/span>);\n  <span class=\"hljs-keyword\">const<\/span> reset = <span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> setCount(initial);\n\n  <span class=\"hljs-keyword\">return<\/span> { count, increment, decrement, reset };\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useCounter.test.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { renderHook, act } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'@testing-library\/react'<\/span>;\n<span class=\"hljs-keyword\">import<\/span> { useCounter } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'.\/useCounter'<\/span>;\n\ntest(<span class=\"hljs-string\">'\u521d\u59cb\u503c\u70ba 0'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useCounter());\n  expect(result.current.count).toBe(<span class=\"hljs-number\">0<\/span>);\n});\n\ntest(<span class=\"hljs-string\">'increment \u589e\u52a0\u8a08\u6578'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useCounter());\n\n  act(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    result.current.increment();\n  });\n\n  expect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u9010\u884c\u7ffb\u8b6f\uff1arenderHook<\/h2>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-keyword\">import<\/span> { renderHook, act } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'@testing-library\/react'<\/span>;\n<span class=\"hljs-comment\">\/\/ \u2191 \u5f9e testing-library \u5f15\u5165 hook \u6e2c\u8a66\u5de5\u5177<\/span>\n\n<span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useCounter());\n<span class=\"hljs-comment\">\/\/ \u2191 \u57f7\u884c hook\uff0c\u7d50\u679c\u653e\u5728 result \u88e1<\/span>\n\nexpect(result.current.count).toBe(<span class=\"hljs-number\">0<\/span>);\n<span class=\"hljs-comment\">\/\/ \u2191 result.current \u662f hook \u56de\u50b3\u7684\u503c<\/span>\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">renderHook \u56de\u50b3\u4ec0\u9ebc\uff1f<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-keyword\">const<\/span> { result, rerender, unmount } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useMyHook());\n\n<span class=\"hljs-comment\">\/\/ result.current - hook \u76ee\u524d\u56de\u50b3\u7684\u503c<\/span>\n<span class=\"hljs-comment\">\/\/ rerender()     - \u91cd\u65b0\u6e32\u67d3\uff0c\u7528\u65bc\u6e2c\u8a66\u4f9d\u8cf4\u9805\u8b8a\u5316<\/span>\n<span class=\"hljs-comment\">\/\/ unmount()      - \u5378\u8f09\uff0c\u7528\u65bc\u6e2c\u8a66 cleanup<\/span>\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u56de\u50b3\u503c<\/th>\n<th>\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code>result.current<\/code><\/td>\n<td>\u53d6\u5f97 hook \u76ee\u524d\u7684\u56de\u50b3\u503c<\/td>\n<\/tr>\n<tr>\n<td><code>rerender()<\/code><\/td>\n<td>\u91cd\u65b0\u57f7\u884c hook\uff08\u53ef\u50b3\u65b0\u53c3\u6578\uff09<\/td>\n<\/tr>\n<tr>\n<td><code>unmount()<\/code><\/td>\n<td>\u6a21\u64ec\u5143\u4ef6\u5378\u8f09<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u9010\u884c\u7ffb\u8b6f\uff1aact<\/h2>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">act(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n  result.current.increment();  <span class=\"hljs-comment\">\/\/ \u72c0\u614b\u66f4\u65b0\u64cd\u4f5c<\/span>\n});\n<span class=\"hljs-comment\">\/\/ \u2191 act \u78ba\u4fdd React \u72c0\u614b\u66f4\u65b0\u5b8c\u6210\u5f8c\u518d\u5f80\u4e0b\u57f7\u884c<\/span>\n\nexpect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);\n<span class=\"hljs-comment\">\/\/ \u2191 \u9019\u6642\u5019\u72c0\u614b\u5df2\u7d93\u66f4\u65b0\u4e86<\/span>\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u70ba\u4ec0\u9ebc\u9700\u8981 act\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">React \u7684\u72c0\u614b\u66f4\u65b0\u662f\u975e\u540c\u6b65\u7684\u3002\u6c92\u6709 <code>act<\/code>\uff0c\u65b7\u8a00\u53ef\u80fd\u5728\u72c0\u614b\u66f4\u65b0\u524d\u5c31\u57f7\u884c\u4e86\uff1a<\/p>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-7\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ \u53ef\u80fd\u5931\u6557\uff1a\u72c0\u614b\u9084\u6c92\u66f4\u65b0<\/span>\nresult.current.increment();\nexpect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);  <span class=\"hljs-comment\">\/\/ \u53ef\u80fd\u9084\u662f 0<\/span>\n\n<span class=\"hljs-comment\">\/\/ \u6b63\u78ba\uff1a\u7528 act \u5305\u8d77\u4f86<\/span>\nact(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n  result.current.increment();\n});\nexpect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);  <span class=\"hljs-comment\">\/\/ \u78ba\u5b9a\u662f 1<\/span>\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-7\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e00\u53e5\u8a71<\/strong>\uff1a\u4efb\u4f55\u6703\u89f8\u767c\u72c0\u614b\u66f4\u65b0\u7684\u64cd\u4f5c\uff0c\u90fd\u8981\u7528 <code>act<\/code> \u5305\u8d77\u4f86\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u898b\u8b8a\u5316<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8b8a\u5316 1\uff1a\u6e2c\u8a66\u521d\u59cb\u53c3\u6578<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">test(<span class=\"hljs-string\">'\u53ef\u4ee5\u8a2d\u5b9a\u521d\u59cb\u503c'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useCounter(<span class=\"hljs-number\">10<\/span>));\n  expect(result.current.count).toBe(<span class=\"hljs-number\">10<\/span>);\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7ffb\u8b6f<\/strong>\uff1a\u50b3\u53c3\u6578\u7d66 hook\uff0c\u6e2c\u8a66\u521d\u59cb\u72c0\u614b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8b8a\u5316 2\uff1a\u7528 rerender \u6e2c\u8a66\u53c3\u6578\u8b8a\u5316<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-9\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">test(<span class=\"hljs-string\">'rerender \u53ef\u4ee5\u50b3\u5165\u65b0\u53c3\u6578'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> { result, rerender } = renderHook(\n    <span class=\"hljs-function\">(<span class=\"hljs-params\">{ initial }<\/span>) =&gt;<\/span> useCounter(initial),\n    { <span class=\"hljs-attr\">initialProps<\/span>: { <span class=\"hljs-attr\">initial<\/span>: <span class=\"hljs-number\">0<\/span> } }\n  );\n\n  expect(result.current.count).toBe(<span class=\"hljs-number\">0<\/span>);\n\n  rerender({ <span class=\"hljs-attr\">initial<\/span>: <span class=\"hljs-number\">100<\/span> });\n  <span class=\"hljs-comment\">\/\/ \u6ce8\u610f\uff1a\u9019\u53ea\u6703\u89f8\u767c\u91cd\u65b0\u6e32\u67d3\uff0c\u4e0d\u6703\u91cd\u8a2d state<\/span>\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-9\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7ffb\u8b6f<\/strong>\uff1a<code>rerender<\/code> \u6a21\u64ec props \u8b8a\u5316\uff0c\u6e2c\u8a66 hook \u5982\u4f55\u97ff\u61c9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8b8a\u5316 3\uff1a\u591a\u6b21\u72c0\u614b\u66f4\u65b0<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">test(<span class=\"hljs-string\">'\u591a\u6b21\u64cd\u4f5c'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useCounter(<span class=\"hljs-number\">0<\/span>));\n\n  act(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    result.current.increment();\n    result.current.increment();\n    result.current.increment();\n  });\n\n  expect(result.current.count).toBe(<span class=\"hljs-number\">3<\/span>);\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7ffb\u8b6f<\/strong>\uff1a\u591a\u500b\u64cd\u4f5c\u53ef\u4ee5\u653e\u5728\u540c\u4e00\u500b <code>act<\/code> \u88e1\u9762\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6e2c\u8a66\u542b\u6709 useEffect \u7684 Hook<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f85\u6e2c\u8a66\u7684 Hook<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useDocumentTitle.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { useEffect } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\n\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">useDocumentTitle<\/span>(<span class=\"hljs-params\">title: string<\/span>) <\/span>{\n  useEffect(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    <span class=\"hljs-built_in\">document<\/span>.title = title;\n  }, &#91;title]);\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-12\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">test(<span class=\"hljs-string\">'\u8a2d\u5b9a document title'<\/span>, () =&gt; {\n  renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useDocumentTitle(<span class=\"hljs-string\">'Hello'<\/span>));\n\n  expect(<span class=\"hljs-built_in\">document<\/span>.title).toBe(<span class=\"hljs-string\">'Hello'<\/span>);\n});\n\ntest(<span class=\"hljs-string\">'title \u8b8a\u5316\u6642\u66f4\u65b0'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> { rerender } = renderHook(\n    <span class=\"hljs-function\">(<span class=\"hljs-params\">{ title }<\/span>) =&gt;<\/span> useDocumentTitle(title),\n    { <span class=\"hljs-attr\">initialProps<\/span>: { <span class=\"hljs-attr\">title<\/span>: <span class=\"hljs-string\">'Hello'<\/span> } }\n  );\n\n  expect(<span class=\"hljs-built_in\">document<\/span>.title).toBe(<span class=\"hljs-string\">'Hello'<\/span>);\n\n  rerender({ <span class=\"hljs-attr\">title<\/span>: <span class=\"hljs-string\">'World'<\/span> });\n\n  expect(<span class=\"hljs-built_in\">document<\/span>.title).toBe(<span class=\"hljs-string\">'World'<\/span>);\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u91cd\u9ede<\/strong>\uff1a<code>useEffect<\/code> \u5728 renderHook \u5f8c\u6703\u81ea\u52d5\u57f7\u884c\uff0c\u4e0d\u9700\u8981\u984d\u5916\u7684 <code>act<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6e2c\u8a66\u542b\u6709 cleanup \u7684 Hook<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f85\u6e2c\u8a66\u7684 Hook<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-13\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useEventListener.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { useEffect } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\n\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">useEventListener<\/span>(<span class=\"hljs-params\">\n  event: string,\n  handler: (e: Event<\/span>) =&gt; <span class=\"hljs-title\">void<\/span>\n) <\/span>{\n  useEffect(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    <span class=\"hljs-built_in\">window<\/span>.addEventListener(event, handler);\n\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      <span class=\"hljs-built_in\">window<\/span>.removeEventListener(event, handler);  <span class=\"hljs-comment\">\/\/ cleanup<\/span>\n    };\n  }, &#91;event, handler]);\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-13\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-14\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">test(<span class=\"hljs-string\">'\u5378\u8f09\u6642\u79fb\u9664\u4e8b\u4ef6\u76e3\u807d'<\/span>, () =&gt; {\n  <span class=\"hljs-keyword\">const<\/span> handler = vi.fn();\n  <span class=\"hljs-keyword\">const<\/span> { unmount } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span>\n    useEventListener(<span class=\"hljs-string\">'click'<\/span>, handler)\n  );\n\n  <span class=\"hljs-comment\">\/\/ \u89f8\u767c\u4e8b\u4ef6\uff0chandler \u6703\u88ab\u547c\u53eb<\/span>\n  <span class=\"hljs-built_in\">window<\/span>.dispatchEvent(<span class=\"hljs-keyword\">new<\/span> Event(<span class=\"hljs-string\">'click'<\/span>));\n  expect(handler).toHaveBeenCalledTimes(<span class=\"hljs-number\">1<\/span>);\n\n  <span class=\"hljs-comment\">\/\/ \u5378\u8f09 hook<\/span>\n  unmount();\n\n  <span class=\"hljs-comment\">\/\/ \u518d\u6b21\u89f8\u767c\uff0chandler \u4e0d\u6703\u88ab\u547c\u53eb<\/span>\n  <span class=\"hljs-built_in\">window<\/span>.dispatchEvent(<span class=\"hljs-keyword\">new<\/span> Event(<span class=\"hljs-string\">'click'<\/span>));\n  expect(handler).toHaveBeenCalledTimes(<span class=\"hljs-number\">1<\/span>);  <span class=\"hljs-comment\">\/\/ \u9084\u662f 1<\/span>\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-14\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u91cd\u9ede<\/strong>\uff1a\u7528 <code>unmount()<\/code> \u6e2c\u8a66 cleanup \u51fd\u5f0f\u6709\u6c92\u6709\u6b63\u78ba\u57f7\u884c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5be6\u6230\uff1a\u6e2c\u8a66 useLocalStorage<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f85\u6e2c\u8a66\u7684 Hook<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-15\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useLocalStorage.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { useState, useEffect } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\n\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">useLocalStorage<\/span>&lt;<span class=\"hljs-title\">T<\/span>&gt;(<span class=\"hljs-params\">key: string, initialValue: T<\/span>) <\/span>{\n  <span class=\"hljs-keyword\">const<\/span> &#91;value, setValue] = useState&lt;T&gt;<span class=\"hljs-function\">(<span class=\"hljs-params\">(<\/span>) =&gt;<\/span> {\n    <span class=\"hljs-keyword\">const<\/span> stored = localStorage.getItem(key);\n    <span class=\"hljs-keyword\">return<\/span> stored ? <span class=\"hljs-built_in\">JSON<\/span>.parse(stored) : initialValue;\n  });\n\n  useEffect(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    localStorage.setItem(key, <span class=\"hljs-built_in\">JSON<\/span>.stringify(value));\n  }, &#91;key, value]);\n\n  <span class=\"hljs-keyword\">return<\/span> &#91;value, setValue] <span class=\"hljs-keyword\">as<\/span> <span class=\"hljs-keyword\">const<\/span>;\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-15\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-16\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">describe(<span class=\"hljs-string\">'useLocalStorage'<\/span>, () =&gt; {\n  beforeEach(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    localStorage.clear();\n  });\n\n  test(<span class=\"hljs-string\">'\u521d\u59cb\u503c\u6b63\u78ba'<\/span>, () =&gt; {\n    <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span>\n      useLocalStorage(<span class=\"hljs-string\">'name'<\/span>, <span class=\"hljs-string\">'default'<\/span>)\n    );\n\n    expect(result.current&#91;<span class=\"hljs-number\">0<\/span>]).toBe(<span class=\"hljs-string\">'default'<\/span>);\n  });\n\n  test(<span class=\"hljs-string\">'\u8b80\u53d6\u5df2\u5b58\u5728\u7684\u503c'<\/span>, () =&gt; {\n    localStorage.setItem(<span class=\"hljs-string\">'name'<\/span>, <span class=\"hljs-string\">'\"stored\"'<\/span>);\n\n    <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span>\n      useLocalStorage(<span class=\"hljs-string\">'name'<\/span>, <span class=\"hljs-string\">'default'<\/span>)\n    );\n\n    expect(result.current&#91;<span class=\"hljs-number\">0<\/span>]).toBe(<span class=\"hljs-string\">'stored'<\/span>);\n  });\n\n  test(<span class=\"hljs-string\">'\u66f4\u65b0\u503c\u6703\u540c\u6b65\u5230 localStorage'<\/span>, () =&gt; {\n    <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span>\n      useLocalStorage(<span class=\"hljs-string\">'count'<\/span>, <span class=\"hljs-number\">0<\/span>)\n    );\n\n    act(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      result.current&#91;<span class=\"hljs-number\">1<\/span>](<span class=\"hljs-number\">42<\/span>);  <span class=\"hljs-comment\">\/\/ setValue(42)<\/span>\n    });\n\n    expect(result.current&#91;<span class=\"hljs-number\">0<\/span>]).toBe(<span class=\"hljs-number\">42<\/span>);\n    expect(localStorage.getItem(<span class=\"hljs-string\">'count'<\/span>)).toBe(<span class=\"hljs-string\">'42'<\/span>);\n  });\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-16\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5be6\u6230\uff1a\u6e2c\u8a66 useDebounce<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f85\u6e2c\u8a66\u7684 Hook<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-17\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useDebounce.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { useState, useEffect } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\n\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">useDebounce<\/span>&lt;<span class=\"hljs-title\">T<\/span>&gt;(<span class=\"hljs-params\">value: T, delay: number<\/span>): <span class=\"hljs-title\">T<\/span> <\/span>{\n  <span class=\"hljs-keyword\">const<\/span> &#91;debouncedValue, setDebouncedValue] = useState(value);\n\n  useEffect(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    <span class=\"hljs-keyword\">const<\/span> timer = setTimeout(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      setDebouncedValue(value);\n    }, delay);\n\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> clearTimeout(timer);\n  }, &#91;value, delay]);\n\n  <span class=\"hljs-keyword\">return<\/span> debouncedValue;\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-17\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-18\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">describe(<span class=\"hljs-string\">'useDebounce'<\/span>, () =&gt; {\n  beforeEach(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    vi.useFakeTimers();\n  });\n\n  afterEach(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    vi.useRealTimers();\n  });\n\n  test(<span class=\"hljs-string\">'\u5ef6\u9072\u66f4\u65b0\u503c'<\/span>, () =&gt; {\n    <span class=\"hljs-keyword\">const<\/span> { result, rerender } = renderHook(\n      <span class=\"hljs-function\">(<span class=\"hljs-params\">{ value }<\/span>) =&gt;<\/span> useDebounce(value, <span class=\"hljs-number\">500<\/span>),\n      { <span class=\"hljs-attr\">initialProps<\/span>: { <span class=\"hljs-attr\">value<\/span>: <span class=\"hljs-string\">'initial'<\/span> } }\n    );\n\n    <span class=\"hljs-comment\">\/\/ \u521d\u59cb\u503c<\/span>\n    expect(result.current).toBe(<span class=\"hljs-string\">'initial'<\/span>);\n\n    <span class=\"hljs-comment\">\/\/ \u66f4\u65b0\u8f38\u5165\u503c<\/span>\n    rerender({ <span class=\"hljs-attr\">value<\/span>: <span class=\"hljs-string\">'updated'<\/span> });\n\n    <span class=\"hljs-comment\">\/\/ \u9084\u6c92\u5230 500ms\uff0c\u503c\u4e0d\u8b8a<\/span>\n    expect(result.current).toBe(<span class=\"hljs-string\">'initial'<\/span>);\n\n    <span class=\"hljs-comment\">\/\/ \u5feb\u8f49 500ms<\/span>\n    act(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      vi.advanceTimersByTime(<span class=\"hljs-number\">500<\/span>);\n    });\n\n    <span class=\"hljs-comment\">\/\/ \u73fe\u5728\u503c\u66f4\u65b0\u4e86<\/span>\n    expect(result.current).toBe(<span class=\"hljs-string\">'updated'<\/span>);\n  });\n\n  test(<span class=\"hljs-string\">'\u9023\u7e8c\u8f38\u5165\u53ea\u4fdd\u7559\u6700\u5f8c\u4e00\u500b'<\/span>, () =&gt; {\n    <span class=\"hljs-keyword\">const<\/span> { result, rerender } = renderHook(\n      <span class=\"hljs-function\">(<span class=\"hljs-params\">{ value }<\/span>) =&gt;<\/span> useDebounce(value, <span class=\"hljs-number\">500<\/span>),\n      { <span class=\"hljs-attr\">initialProps<\/span>: { <span class=\"hljs-attr\">value<\/span>: <span class=\"hljs-string\">'a'<\/span> } }\n    );\n\n    rerender({ <span class=\"hljs-attr\">value<\/span>: <span class=\"hljs-string\">'ab'<\/span> });\n    vi.advanceTimersByTime(<span class=\"hljs-number\">100<\/span>);\n\n    rerender({ <span class=\"hljs-attr\">value<\/span>: <span class=\"hljs-string\">'abc'<\/span> });\n    vi.advanceTimersByTime(<span class=\"hljs-number\">100<\/span>);\n\n    rerender({ <span class=\"hljs-attr\">value<\/span>: <span class=\"hljs-string\">'abcd'<\/span> });\n\n    <span class=\"hljs-comment\">\/\/ \u9084\u662f\u521d\u59cb\u503c<\/span>\n    expect(result.current).toBe(<span class=\"hljs-string\">'a'<\/span>);\n\n    <span class=\"hljs-comment\">\/\/ \u5f9e\u6700\u5f8c\u4e00\u6b21\u8f38\u5165\u958b\u59cb\u7b97 500ms<\/span>\n    act(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      vi.advanceTimersByTime(<span class=\"hljs-number\">500<\/span>);\n    });\n\n    expect(result.current).toBe(<span class=\"hljs-string\">'abcd'<\/span>);\n  });\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-18\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u91cd\u9ede<\/strong>\uff1a\u6e2c\u8a66 debounce \u9700\u8981\u642d\u914d fake timers\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6e2c\u8a66\u975e\u540c\u6b65 Hook<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f85\u6e2c\u8a66\u7684 Hook<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-19\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ useFetch.ts<\/span>\n<span class=\"hljs-keyword\">import<\/span> { useState, useEffect } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\n\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">useFetch<\/span>&lt;<span class=\"hljs-title\">T<\/span>&gt;(<span class=\"hljs-params\">url: string<\/span>) <\/span>{\n  <span class=\"hljs-keyword\">const<\/span> &#91;data, setData] = useState&lt;T | <span class=\"hljs-literal\">null<\/span>&gt;(<span class=\"hljs-literal\">null<\/span>);\n  <span class=\"hljs-keyword\">const<\/span> &#91;loading, setLoading] = useState(<span class=\"hljs-literal\">true<\/span>);\n  <span class=\"hljs-keyword\">const<\/span> &#91;error, setError] = useState&lt;<span class=\"hljs-built_in\">Error<\/span> | <span class=\"hljs-literal\">null<\/span>&gt;(<span class=\"hljs-literal\">null<\/span>);\n\n  useEffect(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    setLoading(<span class=\"hljs-literal\">true<\/span>);\n    fetch(url)\n      .then(<span class=\"hljs-function\"><span class=\"hljs-params\">res<\/span> =&gt;<\/span> res.json())\n      .then(setData)\n      .catch(setError)\n      .finally(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> setLoading(<span class=\"hljs-literal\">false<\/span>));\n  }, &#91;url]);\n\n  <span class=\"hljs-keyword\">return<\/span> { data, loading, error };\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-19\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-20\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">describe(<span class=\"hljs-string\">'useFetch'<\/span>, () =&gt; {\n  beforeEach(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n    vi.resetAllMocks();\n  });\n\n  test(<span class=\"hljs-string\">'\u6210\u529f\u53d6\u5f97\u8cc7\u6599'<\/span>, <span class=\"hljs-keyword\">async<\/span> () =&gt; {\n    <span class=\"hljs-keyword\">const<\/span> mockData = { <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">'Alice'<\/span> };\n    global.fetch = vi.fn().mockResolvedValue({\n      <span class=\"hljs-attr\">json<\/span>: <span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> <span class=\"hljs-built_in\">Promise<\/span>.resolve(mockData),\n    });\n\n    <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span>\n      useFetch(<span class=\"hljs-string\">'\/api\/user'<\/span>)\n    );\n\n    <span class=\"hljs-comment\">\/\/ \u521d\u59cb\u72c0\u614b\uff1aloading<\/span>\n    expect(result.current.loading).toBe(<span class=\"hljs-literal\">true<\/span>);\n    expect(result.current.data).toBe(<span class=\"hljs-literal\">null<\/span>);\n\n    <span class=\"hljs-comment\">\/\/ \u7b49\u5f85\u975e\u540c\u6b65\u5b8c\u6210<\/span>\n    <span class=\"hljs-keyword\">await<\/span> waitFor(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      expect(result.current.loading).toBe(<span class=\"hljs-literal\">false<\/span>);\n    });\n\n    expect(result.current.data).toEqual(mockData);\n    expect(result.current.error).toBe(<span class=\"hljs-literal\">null<\/span>);\n  });\n\n  test(<span class=\"hljs-string\">'\u8655\u7406\u932f\u8aa4'<\/span>, <span class=\"hljs-keyword\">async<\/span> () =&gt; {\n    global.fetch = vi.fn().mockRejectedValue(\n      <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-built_in\">Error<\/span>(<span class=\"hljs-string\">'Network error'<\/span>)\n    );\n\n    <span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span>\n      useFetch(<span class=\"hljs-string\">'\/api\/user'<\/span>)\n    );\n\n    <span class=\"hljs-keyword\">await<\/span> waitFor(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n      expect(result.current.loading).toBe(<span class=\"hljs-literal\">false<\/span>);\n    });\n\n    expect(result.current.data).toBe(<span class=\"hljs-literal\">null<\/span>);\n    expect(result.current.error?.message).toBe(<span class=\"hljs-string\">'Network error'<\/span>);\n  });\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-20\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u91cd\u9ede<\/strong>\uff1a\u975e\u540c\u6b65 hook \u7528 <code>waitFor<\/code> \u7b49\u5f85\u72c0\u614b\u8b8a\u5316\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u898b\u932f\u8aa4\u8207\u89e3\u6c7a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u932f\u8aa4 1\uff1a\u5fd8\u8a18\u7528 act<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-21\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ \u932f\u8aa4\uff1a\u6703\u6709 warning<\/span>\nresult.current.increment();\nexpect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);\n\n<span class=\"hljs-comment\">\/\/ \u6b63\u78ba<\/span>\nact(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n  result.current.increment();\n});\nexpect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-21\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u932f\u8aa4 2\uff1a\u5728 act \u5916\u9762\u65b7\u8a00\u66f4\u65b0\u5f8c\u7684\u503c<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-22\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ \u932f\u8aa4\uff1a\u65b7\u8a00\u653e\u5728 act \u88e1\u9762<\/span>\nact(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n  result.current.increment();\n  expect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);  <span class=\"hljs-comment\">\/\/ \u53ef\u80fd\u9084\u6c92\u66f4\u65b0<\/span>\n});\n\n<span class=\"hljs-comment\">\/\/ \u6b63\u78ba\uff1a\u65b7\u8a00\u653e\u5728 act \u5916\u9762<\/span>\nact(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n  result.current.increment();\n});\nexpect(result.current.count).toBe(<span class=\"hljs-number\">1<\/span>);\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-22\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u932f\u8aa4 3\uff1a\u5fd8\u8a18 await \u975e\u540c\u6b65\u7684 act<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-23\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ \u932f\u8aa4\uff1a\u975e\u540c\u6b65\u64cd\u4f5c\u6c92\u6709 await<\/span>\nact(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> {\n  result.current.fetchData();  <span class=\"hljs-comment\">\/\/ \u975e\u540c\u6b65<\/span>\n});\n\n<span class=\"hljs-comment\">\/\/ \u6b63\u78ba\uff1a\u7528 await<\/span>\n<span class=\"hljs-keyword\">await<\/span> act(<span class=\"hljs-keyword\">async<\/span> () =&gt; {\n  <span class=\"hljs-keyword\">await<\/span> result.current.fetchData();\n});\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-23\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6574\u7406\uff1aact \u4f7f\u7528\u6642\u6a5f<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u60c5\u6cc1<\/th>\n<th>\u9700\u8981 act\uff1f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u547c\u53eb\u6703\u66f4\u65b0\u72c0\u614b\u7684\u51fd\u5f0f<\/td>\n<td>\u662f<\/td>\n<\/tr>\n<tr>\n<td>\u89f8\u767c\u4e8b\u4ef6<\/td>\n<td>\u662f<\/td>\n<\/tr>\n<tr>\n<td>\u5feb\u8f49 fake timers<\/td>\n<td>\u662f<\/td>\n<\/tr>\n<tr>\n<td>\u55ae\u7d14\u8b80\u53d6 result.current<\/td>\n<td>\u5426<\/td>\n<\/tr>\n<tr>\n<td>renderHook \u672c\u8eab<\/td>\n<td>\u5426\uff08\u5167\u90e8\u5df2\u8655\u7406\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Vibe Coder \u6aa2\u67e5\u9ede<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u770b\u5230 hook \u6e2c\u8a66\u6642\u78ba\u8a8d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] \u72c0\u614b\u66f4\u65b0\u6709\u7528 <code>act<\/code> \u5305\u8d77\u4f86\u55ce\uff1f<\/li>\n<li>[ ] \u65b7\u8a00\u662f\u653e\u5728 <code>act<\/code> \u5916\u9762\u55ce\uff1f<\/li>\n<li>[ ] \u975e\u540c\u6b65\u64cd\u4f5c\u6709\u7528 <code>waitFor<\/code> \u6216 <code>await act<\/code> \u55ce\uff1f<\/li>\n<li>[ ] \u6709\u6e2c\u8a66 cleanup\uff08unmount\uff09\u55ce\uff1f<\/li>\n<li>[ ] \u7528\u5230 timer \u7684 hook \u6709\u7528 fake timers \u55ce\uff1f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5ef6\u4f38\uff1a\u77e5\u9053\u5c31\u597d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u4e9b\u9032\u968e\u7528\u6cd5\u9047\u5230\u518d\u67e5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>wrapper<\/strong>\uff1a\u6e2c\u8a66\u9700\u8981 Provider \u7684 hook\uff08\u5982 Context\uff09<\/li>\n<li><strong>initialProps<\/strong>\uff1a\u8a2d\u5b9a hook \u7684\u521d\u59cb\u53c3\u6578<\/li>\n<li><strong>hydrate<\/strong>\uff1a\u6e2c\u8a66 SSR hydration<\/li>\n<\/ul>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-24\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ wrapper \u7bc4\u4f8b\uff1a\u63d0\u4f9b Context<\/span>\n<span class=\"hljs-keyword\">const<\/span> wrapper = <span class=\"hljs-function\">(<span class=\"hljs-params\">{ children }<\/span>) =&gt;<\/span> (\n  <span class=\"xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">ThemeContext.Provider<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"dark\"<\/span>&gt;<\/span>\n    {children}\n  <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">ThemeContext.Provider<\/span>&gt;<\/span><\/span>\n);\n\n<span class=\"hljs-keyword\">const<\/span> { result } = renderHook(<span class=\"hljs-function\"><span class=\"hljs-params\">()<\/span> =&gt;<\/span> useTheme(), { wrapper });\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-24\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u9ede\u56de\u9867<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>renderHook<\/strong>\uff1a\u7368\u7acb\u6e2c\u8a66 hook\uff0c\u4e0d\u9700\u8981\u5beb\u6e2c\u8a66\u5143\u4ef6<\/li>\n<li><strong>result.current<\/strong>\uff1a\u53d6\u5f97 hook \u76ee\u524d\u7684\u56de\u50b3\u503c<\/li>\n<li><strong>act<\/strong>\uff1a\u78ba\u4fdd\u72c0\u614b\u66f4\u65b0\u5b8c\u6210\u5f8c\u518d\u65b7\u8a00<\/li>\n<li><strong>rerender<\/strong>\uff1a\u6e2c\u8a66 props \u8b8a\u5316<\/li>\n<li><strong>unmount<\/strong>\uff1a\u6e2c\u8a66 cleanup \u908f\u8f2f<\/li>\n<li><strong>waitFor<\/strong>\uff1a\u7b49\u5f85\u975e\u540c\u6b65\u64cd\u4f5c\u5b8c\u6210<\/li>\n<\/ol>\n\n\n\n<div id=\"quiz-advanced\">\n<style>\n#quiz-advanced .badge {\n        display: inline-block;\n        padding: 4px 10px;\n        border-radius: 12px;\n        font-size: 0.75em;\n        font-weight: bold;\n        margin-left: 8px;\n      }#quiz-advanced .badge.scenario {\n        background: #ebf8ff;\n        color: #2b6cb0;\n      }#quiz-advanced .badge.debug {\n        background: #fef3c7;\n        color: #92400e;\n      }#quiz-advanced .question-adv {\n        background: white;\n        border-radius: 10px;\n        padding: 24px;\n        margin: 20px 0;\n        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);\n        border-left: 4px solid #ed8936;\n      }#quiz-advanced .question-adv h3 {\n        margin-top: 0;\n        color: #2d3748;\n      }#quiz-advanced .code-block {\n        background: #1e1e1e;\n        color: #d4d4d4;\n        padding: 14px;\n        border-radius: 6px;\n        font-family: \"Menlo\", \"Monaco\", \"Courier New\", monospace;\n        font-size: 0.9em;\n        overflow-x: auto;\n        margin: 12px 0;\n        white-space: pre-wrap;\n      }#quiz-advanced .options-adv {\n        list-style: none;\n        padding: 0;\n      }#quiz-advanced .options-adv li {\n        padding: 14px 16px;\n        margin: 10px 0;\n        border: 2px solid #e2e8f0;\n        border-radius: 8px;\n        cursor: pointer;\n        transition: all 0.2s;\n      }#quiz-advanced .options-adv li:hover:not(.disabled) {\n        border-color: #ed8936;\n        background: #fffaf0;\n      }#quiz-advanced .options-adv li.disabled {\n        cursor: default;\n        opacity: 0.7;\n      }#quiz-advanced .options-adv li.show-answer {\n        border-color: #48bb78;\n        background: #f0fff4;\n      }#quiz-advanced .options-adv li.wrong {\n        border-color: #fc8181;\n        background: #fff5f5;\n      }#quiz-advanced .feedback-adv {\n        margin-top: 16px;\n        padding: 14px;\n        border-radius: 8px;\n        display: none;\n        line-height: 1.6;\n      }#quiz-advanced .feedback-adv.correct {\n        background: #f0fff4;\n        color: #276749;\n        display: block;\n      }#quiz-advanced .feedback-adv.wrong {\n        background: #fff5f5;\n        color: #c53030;\n        display: block;\n      }#quiz-advanced .feedback-adv \n      .score-adv {\n        text-align: center;\n        font-size: 1.4em;\n        padding: 24px;\n        background: white;\n        border-radius: 10px;\n        margin-top: 24px;\n        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);\n      }#quiz-advanced .intro {\n        background: #ebf8ff;\n        padding: 16px;\n        border-radius: 8px;\n        margin-bottom: 20px;\n        color: #2c5282;\n      }\n<\/style>\n<h1>\u9032\u968e\u6e2c\u9a57\uff1a\u6e2c\u8a66\u81ea\u8a02 Hooks\uff1arenderHook \u8207 act<\/h1>\n    <div class=\"intro\">\n      <strong>\u6e2c\u9a57\u76ee\u6a19\uff1a<\/strong>\u9a57\u8b49\u4f60\u662f\u5426\u80fd\u5728\u5be6\u969b\u60c5\u5883\u4e2d\u61c9\u7528\u6240\u5b78\u3002<br \/>\n      \u5171 5 \u984c\uff0c\u5305\u542b\u60c5\u5883\u984c\u8207\u932f\u8aa4\u8a3a\u65b7\u984c\u3002\n    <\/div>\n\n    <div class=\"question-adv\" id=\"qAdv1\">\n      <h3>1. \u4f60\u6b63\u5728\u6e2c\u8a66\u4e00\u500b useCounter Hook\uff0c\u9700\u8981\u9a57\u8b49\u9023\u7e8c\u547c\u53eb\u4e09\u6b21 increment \u5f8c\u8a08\u6578\u662f\u5426\u70ba 3\u3002\u4ee5\u4e0b\u54ea\u7a2e\u5beb\u6cd5\u6700\u6b63\u78ba\uff1f <span class=\"badge scenario\">\u60c5\u5883\u984c<\/span><\/h3>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(1, 'A', 'C')\">A. \u5206\u5225\u7528\u4e09\u500b <code>act<\/code> \u5305\u88f9\u6bcf\u6b21 <code>increment()<\/code>\uff0c\u4e2d\u9593\u5404\u505a\u4e00\u6b21\u65b7\u8a00<\/li>\n        <li onclick=\"checkAnswerAdv(1, 'B', 'C')\">B. \u76f4\u63a5\u9023\u7e8c\u547c\u53eb\u4e09\u6b21 <code>result.current.increment()<\/code>\uff0c\u6700\u5f8c\u518d\u65b7\u8a00<\/li>\n        <li onclick=\"checkAnswerAdv(1, 'C', 'C')\">C. \u7528\u4e00\u500b <code>act<\/code> \u5305\u88f9\u4e09\u6b21 <code>increment()<\/code> \u547c\u53eb\uff0c\u7136\u5f8c\u5728 act \u5916\u9762\u65b7\u8a00<\/li>\n        <li onclick=\"checkAnswerAdv(1, 'D', 'C')\">D. \u7528 <code>waitFor<\/code> \u7b49\u5f85 <code>result.current.count<\/code> \u8b8a\u6210 3<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv1\"><\/div>\n    <\/div>\n\n    <div class=\"question-adv\" id=\"qAdv2\">\n      <h3>2. \u5c0f\u660e\u5beb\u4e86\u4ee5\u4e0b\u6e2c\u8a66\u7a0b\u5f0f\u78bc\uff0c\u4f46\u6e2c\u8a66\u5931\u6557\u4e86\uff1a<span class=\"badge debug\">\u932f\u8aa4\u8a3a\u65b7<\/span><\/h3>\n      <div class=\"code-block\">test(&#8216;increment \u589e\u52a0\u8a08\u6578&#8217;, () => {\n  const { result } = renderHook(() => useCounter());\n\n  act(() => {\n    result.current.increment();\n    expect(result.current.count).toBe(1);\n  });\n});<\/div>\n      <p>\u6700\u53ef\u80fd\u7684\u554f\u984c\u662f\u4ec0\u9ebc\uff1f<\/p>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(2, 'A', 'B')\">A. <code>renderHook<\/code> \u6c92\u6709\u6b63\u78ba\u5f15\u5165<\/li>\n        <li onclick=\"checkAnswerAdv(2, 'B', 'B')\">B. \u65b7\u8a00\u4e0d\u61c9\u8a72\u653e\u5728 <code>act<\/code> \u88e1\u9762\uff0c\u56e0\u70ba\u72c0\u614b\u53ef\u80fd\u9084\u6c92\u66f4\u65b0\u5b8c\u6210<\/li>\n        <li onclick=\"checkAnswerAdv(2, 'C', 'B')\">C. \u61c9\u8a72\u4f7f\u7528 <code>await act<\/code> \u800c\u4e0d\u662f <code>act<\/code><\/li>\n        <li onclick=\"checkAnswerAdv(2, 'D', 'B')\">D. <code>useCounter<\/code> \u9700\u8981\u50b3\u5165\u521d\u59cb\u503c\u53c3\u6578<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv2\"><\/div>\n    <\/div>\n\n    <div class=\"question-adv\" id=\"qAdv3\">\n      <h3>3. \u4f60\u9700\u8981\u6e2c\u8a66\u4e00\u500b useDebounce Hook\uff0c\u5b83\u6703\u5728 500ms \u5f8c\u624d\u66f4\u65b0\u503c\u3002\u4f60\u5df2\u7d93\u8a2d\u5b9a\u4e86 <code>vi.useFakeTimers()<\/code>\uff0c\u63a5\u4e0b\u4f86\u61c9\u8a72\u600e\u9ebc\u505a\uff1f <span class=\"badge scenario\">\u60c5\u5883\u984c<\/span><\/h3>\n      <div class=\"code-block\">const { result, rerender } = renderHook(\n  ({ value }) => useDebounce(value, 500),\n  { initialProps: { value: &#8216;initial&#8217; } }\n);\n\nrerender({ value: &#8216;updated&#8217; });\n\/\/ \u63a5\u4e0b\u4f86\u61c9\u8a72\u600e\u9ebc\u5beb\uff1f<\/div>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(3, 'A', 'D')\">A. <code>await waitFor(() => expect(result.current).toBe('updated'));<\/code><\/li>\n        <li onclick=\"checkAnswerAdv(3, 'B', 'D')\">B. <code>vi.advanceTimersByTime(500);<\/code> \u7136\u5f8c\u76f4\u63a5\u65b7\u8a00<\/li>\n        <li onclick=\"checkAnswerAdv(3, 'C', 'D')\">C. <code>await vi.advanceTimersByTimeAsync(500);<\/code><\/li>\n        <li onclick=\"checkAnswerAdv(3, 'D', 'D')\">D. <code>act(() => { vi.advanceTimersByTime(500); });<\/code> \u7136\u5f8c\u65b7\u8a00<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv3\"><\/div>\n    <\/div>\n\n    <div class=\"question-adv\" id=\"qAdv4\">\n      <h3>4. \u4ee5\u4e0b\u6e2c\u8a66 useFetch Hook \u7684\u7a0b\u5f0f\u78bc\u6709\u4ec0\u9ebc\u554f\u984c\uff1f<span class=\"badge debug\">\u932f\u8aa4\u8a3a\u65b7<\/span><\/h3>\n      <div class=\"code-block\">test(&#8216;\u6210\u529f\u53d6\u5f97\u8cc7\u6599&#8217;, () => {\n  const mockData = { name: &#8216;Alice&#8217; };\n  global.fetch = vi.fn().mockResolvedValue({\n    json: () => Promise.resolve(mockData),\n  });\n\n  const { result } = renderHook(() => useFetch(&#8216;\/api\/user&#8217;));\n\n  expect(result.current.loading).toBe(false);\n  expect(result.current.data).toEqual(mockData);\n});<\/div>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(4, 'A', 'C')\">A. <code>global.fetch<\/code> \u61c9\u8a72\u6539\u7528 <code>window.fetch<\/code><\/li>\n        <li onclick=\"checkAnswerAdv(4, 'B', 'C')\">B. mock \u7684\u5beb\u6cd5\u932f\u8aa4\uff0c\u61c9\u8a72\u7528 <code>mockImplementation<\/code><\/li>\n        <li onclick=\"checkAnswerAdv(4, 'C', 'C')\">C. fetch \u662f\u975e\u540c\u6b65\u7684\uff0c\u9700\u8981\u7528 <code>waitFor<\/code> \u7b49\u5f85 loading \u8b8a\u6210 false \u5f8c\u518d\u65b7\u8a00<\/li>\n        <li onclick=\"checkAnswerAdv(4, 'D', 'C')\">D. \u9700\u8981\u5728 <code>act<\/code> \u88e1\u9762\u547c\u53eb <code>renderHook<\/code><\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv4\"><\/div>\n    <\/div>\n\n    <div class=\"question-adv\" id=\"qAdv5\">\n      <h3>5. \u4f60\u6b63\u5728\u6e2c\u8a66\u4e00\u500b useEventListener Hook\uff0c\u9700\u8981\u9a57\u8b49\u5378\u8f09\u5f8c\u4e8b\u4ef6\u76e3\u807d\u5668\u78ba\u5be6\u88ab\u79fb\u9664\u3002\u4ee5\u4e0b\u54ea\u7a2e\u6e2c\u8a66\u7b56\u7565\u6700\u5b8c\u6574\uff1f <span class=\"badge scenario\">\u60c5\u5883\u984c<\/span><\/h3>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(5, 'A', 'D')\">A. \u53ea\u8981\u78ba\u8a8d <code>unmount()<\/code> \u4e0d\u62cb\u51fa\u932f\u8aa4\u5373\u53ef<\/li>\n        <li onclick=\"checkAnswerAdv(5, 'B', 'D')\">B. \u5728 <code>unmount()<\/code> \u524d\u5f8c\u5404\u89f8\u767c\u4e00\u6b21\u4e8b\u4ef6\uff0c\u78ba\u8a8d handler \u53ea\u88ab\u547c\u53eb\u4e00\u6b21<\/li>\n        <li onclick=\"checkAnswerAdv(5, 'C', 'D')\">C. \u4f7f\u7528 <code>vi.spyOn(window, 'removeEventListener')<\/code> \u78ba\u8a8d\u88ab\u547c\u53eb<\/li>\n        <li onclick=\"checkAnswerAdv(5, 'D', 'D')\">D. \u5148\u89f8\u767c\u4e8b\u4ef6\u78ba\u8a8d handler \u88ab\u547c\u53eb\uff0c\u547c\u53eb <code>unmount()<\/code>\uff0c\u518d\u89f8\u767c\u4e8b\u4ef6\u78ba\u8a8d handler \u4e0d\u518d\u88ab\u547c\u53eb<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv5\"><\/div>\n    <\/div>\n\n    <div class=\"score-adv\" id=\"scoreAdv\" style=\"display:none;\"><\/div>\n<script>\n\n      let answeredAdv = 0;\n      let correctAdv = 0;\n      const totalAdv = 5;\n      const explanationsAdv = {\n        1: \"\u591a\u500b\u72c0\u614b\u66f4\u65b0\u64cd\u4f5c\u53ef\u4ee5\u653e\u5728\u540c\u4e00\u500b <code>act<\/code> \u88e1\u9762\uff0c\u9019\u6a23\u53ef\u4ee5\u6279\u6b21\u8655\u7406\u66f4\u65b0\u3002\u91cd\u9ede\u662f\u65b7\u8a00\u5fc5\u9808\u653e\u5728 <code>act<\/code> \u5916\u9762\uff0c\u56e0\u70ba <code>act<\/code> \u7d50\u675f\u6642 React \u624d\u4fdd\u8b49\u72c0\u614b\u66f4\u65b0\u5b8c\u6210\u3002\u9078\u9805 B \u6c92\u6709\u7528 <code>act<\/code> \u6703\u6709 warning\uff0c\u9078\u9805 D \u7684 <code>waitFor<\/code> \u9069\u7528\u65bc\u975e\u540c\u6b65\u64cd\u4f5c\u800c\u975e\u540c\u6b65\u7684\u72c0\u614b\u66f4\u65b0\u3002\",\n        2: \"\u65b7\u8a00\u61c9\u8a72\u653e\u5728 <code>act<\/code> \u5916\u9762\uff0c\u800c\u4e0d\u662f\u88e1\u9762\u3002\u5728 <code>act<\/code> \u5167\u90e8\uff0cReact \u7684\u72c0\u614b\u66f4\u65b0\u53ef\u80fd\u9084\u5728\u9032\u884c\u4e2d\uff0c\u6b64\u6642\u65b7\u8a00 <code>result.current.count<\/code> \u53ef\u80fd\u9084\u662f\u820a\u503c\u3002\u6b63\u78ba\u505a\u6cd5\u662f\u5728 <code>act<\/code> \u7d50\u675f\u5f8c\u518d\u9032\u884c\u65b7\u8a00\u3002\",\n        3: \"\u5feb\u8f49 fake timers \u6703\u89f8\u767c\u72c0\u614b\u66f4\u65b0\uff0c\u6240\u4ee5\u9700\u8981\u7528 <code>act<\/code> \u5305\u88f9 <code>vi.advanceTimersByTime()<\/code>\u3002\u9078\u9805 B \u6c92\u6709\u7528 <code>act<\/code> \u53ef\u80fd\u5c0e\u81f4 React warning \u4e14\u72c0\u614b\u53ef\u80fd\u9084\u6c92\u66f4\u65b0\u3002<code>waitFor<\/code> \u5728 fake timers \u74b0\u5883\u4e0b\u4e0d\u6703\u81ea\u52d5\u63a8\u9032\u6642\u9593\u3002\",\n        4: \"fetch \u662f\u975e\u540c\u6b65\u64cd\u4f5c\uff0c<code>renderHook<\/code> \u5f8c <code>useEffect<\/code> \u6703\u57f7\u884c fetch\uff0c\u4f46 Promise \u9084\u6c92 resolve\u3002\u9700\u8981\u7528 <code>await waitFor(() => expect(result.current.loading).toBe(false))<\/code> \u7b49\u5f85\u975e\u540c\u6b65\u64cd\u4f5c\u5b8c\u6210\u5f8c\u518d\u65b7\u8a00\u8cc7\u6599\u3002\",\n        5: \"\u9019\u662f\u6700\u5b8c\u6574\u7684\u6e2c\u8a66\u7b56\u7565\uff1a\u5148\u9a57\u8b49\u6b63\u5e38\u60c5\u6cc1\uff08\u4e8b\u4ef6\u88ab\u76e3\u807d\uff09\uff0c\u518d\u9a57\u8b49\u5378\u8f09\u5f8c\u7684\u884c\u70ba\uff08\u4e8b\u4ef6\u76e3\u807d\u5668\u88ab\u79fb\u9664\uff09\u3002\u900f\u904e\u6bd4\u8f03 unmount \u524d\u5f8c handler \u7684\u547c\u53eb\u6b21\u6578\uff0c\u53ef\u4ee5\u78ba\u4fdd cleanup \u51fd\u5f0f\u6b63\u78ba\u57f7\u884c\u4e86 <code>removeEventListener<\/code>\u3002\u9078\u9805 C \u53ea\u9a57\u8b49\u4e86\u65b9\u6cd5\u88ab\u547c\u53eb\uff0c\u4f46\u6c92\u6709\u9a57\u8b49\u5be6\u969b\u884c\u70ba\u6548\u679c\u3002\"\n      };\n\n      function checkAnswerAdv(qNum, selected, correctAns) {\n        const question = document.getElementById(\"qAdv\" + qNum);\n        if (question.classList.contains(\"answered\")) return;\n\n        question.classList.add(\"answered\");\n        answeredAdv++;\n\n        const options = question.querySelectorAll(\".options-adv li\");\n        options.forEach((opt) => {\n          opt.classList.add(\"disabled\");\n          if (opt.textContent.startsWith(correctAns + \".\")) {\n            opt.classList.add(\"show-answer\");\n          }\n        });\n\n        const feedback = document.getElementById(\"fbAdv\" + qNum);\n        if (selected === correctAns) {\n          correctAdv++;\n          feedback.className = \"feedback-adv correct\";\n          feedback.innerHTML = \"\u2713 \u6b63\u78ba\uff01\" + explanationsAdv[qNum];\n        } else {\n          feedback.className = \"feedback-adv wrong\";\n          feedback.innerHTML =\n            \"\u2717 \u932f\u8aa4\u3002\u6b63\u78ba\u7b54\u6848\u662f \" + correctAns + \"\u3002\" + explanationsAdv[qNum];\n          options.forEach((opt) => {\n            if (opt.textContent.startsWith(selected + \".\")) {\n              opt.classList.add(\"wrong\");\n            }\n          });\n        }\n\n        if (answeredAdv === totalAdv) {\n          const scoreDiv = document.getElementById(\"scoreAdv\");\n          scoreDiv.style.display = \"block\";\n          let msg = \"\";\n          if (correctAdv === totalAdv) msg = \"\ud83c\udfaf \u5b8c\u7f8e\uff01\u4f60\u5df2\u7d93\u6e96\u5099\u597d\u5be6\u6230\u4e86\uff01\";\n          else if (correctAdv >= Math.ceil(totalAdv * 0.8))\n            msg = \"\ud83d\udcaa \u5f88\u68d2\uff01\u518d\u8907\u7fd2\u4e00\u4e0b\u932f\u7684\u984c\u76ee\";\n          else if (correctAdv >= Math.ceil(totalAdv * 0.6))\n            msg = \"\ud83d\udcd6 \u5efa\u8b70\u91cd\u8b80\u76f8\u95dc\u6bb5\u843d\u5f8c\u518d\u8a66\u4e00\u6b21\";\n          else msg = \"\ud83d\udd04 \u5efa\u8b70\u91cd\u65b0\u95b1\u8b80\u6587\u4ef6\uff0c\u7279\u5225\u6ce8\u610f\u64cd\u4f5c\u6d41\u7a0b\";\n          scoreDiv.innerHTML =\n            \"\u6e2c\u9a57\u5b8c\u6210\uff01\u5f97\u5206\uff1a\" + correctAdv + \" \/ \" + totalAdv + \"<br>\" + msg;\n        }\n      }\n    \n<\/script>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6e2c\u9a57\uff1a\u6e2c\u8a66\u81ea\u8a02 Hooks\uff1arenderHook \u8207 act \u5171 5 \u984c\uff0c\u9ede\u9078\u7b54\u6848\u5f8c\u6703\u7acb\u5373\u986f\u793a\u7d50\u679c 1. \u70ba\u4ec0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rolpb_likes":0,"footnotes":""},"categories":[340],"tags":[354,352,269,353,341],"class_list":["post-361","post","type-post","status-publish","format-standard","hentry","category-vitest","tag-act","tag-hooks","tag-react","tag-renderhook","tag-vitest"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"_links":{"self":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/posts\/361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/comments?post=361"}],"version-history":[{"count":0,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/posts\/361\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/media?parent=361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/categories?post=361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/tags?post=361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}