{"id":267,"date":"2026-09-28T10:33:26","date_gmt":"2026-09-28T02:33:26","guid":{"rendered":"https:\/\/yykcj.com\/?p=267"},"modified":"2026-09-28T10:33:26","modified_gmt":"2026-09-28T02:33:26","slug":"chrome-devtools-%e9%ab%98%e7%ba%a7%e8%b0%83%e8%af%95%e6%8a%80%e5%b7%a7%ef%bc%9a%e4%bb%8e%e6%96%ad%e7%82%b9%e5%88%b0%e6%80%a7%e8%83%bd%e5%89%96%e6%9e%90%e7%9a%84%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/yykcj.com\/?p=267","title":{"rendered":"Chrome DevTools \u9ad8\u7ea7\u8c03\u8bd5\u6280\u5de7\uff1a\u4ece\u65ad\u70b9\u5230\u6027\u80fd\u5256\u6790\u7684\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"

\u4e3a\u4ec0\u4e48\u4f60\u9700\u8981\u638c\u63e1 DevTools \u9ad8\u7ea7\u8c03\u8bd5\uff1f<\/h2>\n

\u65e5\u5e38\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9047\u5230\u8fd9\u6837\u7684\u573a\u666f\uff1a\u4e00\u4e2a\u6309\u94ae\u70b9\u51fb\u540e\u5076\u5c14\u62a5\u9519\uff0c\u7528 console.log<\/code> \u6253\u4e86\u51e0\u5341\u884c\u4e5f\u627e\u4e0d\u5230\u89c4\u5f8b\uff1b\u9875\u9762\u6eda\u52a8\u65f6\u5361\u987f\uff0c\u4f46\u4e0d\u77e5\u9053\u54ea\u6bb5\u4ee3\u7801\u5728\u62d6\u540e\u817f\uff1b\u5185\u5b58\u6301\u7eed\u4e0a\u6da8\uff0c\u5374\u65e0\u4ece\u4e0b\u624b\u3002\u57fa\u7840\u7684 console.log<\/code> \u548c debugger<\/code> \u53ea\u80fd\u89e3\u51b3\u7b80\u5355\u95ee\u9898\uff0c\u9762\u5bf9\u5f02\u6b65\u3001\u5faa\u73af\u3001\u6027\u80fd\u3001\u5185\u5b58\u7b49\u590d\u6742\u60c5\u51b5\uff0c\u5fc5\u987b\u638c\u63e1 Chrome DevTools \u7684\u9ad8\u7ea7\u8c03\u8bd5\u80fd\u529b\u3002<\/p>\n

\u672c\u6587\u4e0d\u4f1a\u91cd\u590d\u4ecb\u7ecd\u9762\u677f\u529f\u80fd\uff0c\u800c\u662f\u901a\u8fc7\u4e00\u4e2a\u771f\u5b9e\u7684\u5f85\u529e\u4e8b\u9879\u5e94\u7528\uff0c\u5e26\u4f60\u5b9e\u8df5\u6761\u4ef6\u65ad\u70b9\u3001\u65e5\u5fd7\u70b9\u3001\u6027\u80fd\u76d1\u89c6\u3001\u5185\u5b58\u5feb\u7167\u7b49\u6280\u5de7\u3002\u6240\u6709\u4ee3\u7801\u5747\u53ef\u8fd0\u884c\uff0c\u8bf7\u6253\u5f00 Chrome \u5e76\u8ddf\u7740\u64cd\u4f5c\u3002<\/p>\n

\u51c6\u5907\u5de5\u4f5c\uff1a\u4e00\u4e2a\u7528\u4e8e\u8c03\u8bd5\u7684\u793a\u4f8b\u5e94\u7528<\/h2>\n

\u65b0\u5efa index.html<\/code>\uff0c\u7c98\u8d34\u4ee5\u4e0b\u4ee3\u7801\u3002\u5b83\u6a21\u62df\u4e86\u4e00\u4e2a\u5f85\u529e\u5217\u8868\uff0c\u5305\u542b\u4e00\u4e2a\u4f1a\u968f\u673a\u51fa\u9519\u7684\u201c\u6807\u8bb0\u5b8c\u6210\u201d\u529f\u80fd\uff0c\u4ee5\u53ca\u4e00\u4e2a\u4f1a\u6cc4\u6f0f\u5185\u5b58\u7684\u5b9a\u65f6\u5668\u3002<\/p>\n

\n<!DOCTYPE html>\n<html lang="zh-CN">\n<head>\n  <meta charset="UTF-8">\n  <title>DevTools \u8c03\u8bd5\u793a\u4f8b<\/title>\n  <style>\n    body { font-family: sans-serif; padding: 20px; }\n    .todo-item { padding: 8px; border-bottom: 1px solid #eee; }\n    .done { text-decoration: line-through; color: #999; }\n    button { margin-left: 10px; }\n  <\/style>\n<\/head>\n<body>\n  <h2>\u5f85\u529e\u5217\u8868<\/h2>\n  <div id="app"><\/div>\n  <button id="leakBtn">\u542f\u52a8\u5185\u5b58\u6cc4\u6f0f\u5b9a\u65f6\u5668<\/button>\n\n  <script>\n    \/\/ \u6a21\u62df\u6570\u636e\n    const todos = [\n      { id: 1, text: '\u5b66\u4e60 DevTools', done: false },\n      { id: 2, text: '\u5199\u4e00\u7bc7\u6559\u7a0b', done: false },\n      { id: 3, text: '\u8c03\u8bd5\u6027\u80fd\u95ee\u9898', done: false }\n    ];\n\n    \/\/ \u6e32\u67d3\u51fd\u6570\n    function render() {\n      const app = document.getElementById('app');\n      app.innerHTML = todos.map(todo => `\n        <div class="todo-item ${todo.done ? 'done' : ''}">\n          <span>${todo.text}<\/span>\n          <button onclick="toggleDone(${todo.id})">\u6807\u8bb0\u5b8c\u6210<\/button>\n        <\/div>\n      `).join('');\n    }\n\n    \/\/ \u6709\u95ee\u9898\u7684\u51fd\u6570\uff1a\u5f53 todo.done \u4e3a true \u65f6\uff0c\u518d\u6b21\u70b9\u51fb\u4f1a\u62a5\u9519\n    function toggleDone(id) {\n      const todo = todos.find(t => t.id === id);\n      \/\/ \u6545\u610f\u5236\u9020\u4e00\u4e2a\u9519\u8bef\uff1a\u5982\u679c\u5df2\u7ecf\u5b8c\u6210\uff0c\u518d\u53d6\u53cd\u4f1a\u5f97\u5230 false\uff0c\u4f46\u8fd9\u91cc\u8bbf\u95ee\u4e86\u4e0d\u5b58\u5728\u7684\u5c5e\u6027\n      todo.done = !todo.done;\n      if (todo.done) {\n        \/\/ \u6a21\u62df\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\uff0c\u53ef\u80fd\u4f1a\u5931\u8d25\n        setTimeout(() => {\n          console.log('\u5f02\u6b65\u66f4\u65b0\u5b8c\u6210\u72b6\u6001', todo.id);\n          \/\/ \u5982\u679c todo \u88ab\u5220\u9664\uff0c\u8fd9\u91cc\u4f1a\u62a5\u9519\n          if (!todo) {\n            throw new Error('Todo \u4e0d\u5b58\u5728');\n          }\n        }, 100);\n      }\n      render();\n    }\n\n    \/\/ \u5185\u5b58\u6cc4\u6f0f\uff1a\u6bcf\u6b21\u70b9\u51fb\u90fd\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u6302\u5230 window \u4e0a\n    let leakArrays = [];\n    document.getElementById('leakBtn').addEventListener('click', () => {\n      const bigArray = new Array(100000).fill('leak');\n      leakArrays.push(bigArray);\n      window.__leaked = leakArrays;\n      console.log('\u6cc4\u6f0f\u6570\u7ec4\u6570\u91cf:', leakArrays.length);\n    });\n\n    render();\n  <\/script>\n<\/body>\n<\/html>\n<\/code><\/pre>\n
\u7528 Chrome \u6253\u5f00\u8fd9\u4e2a\u6587\u4ef6\uff0c\u6309 F12<\/code> \u6253\u5f00 DevTools\uff0c\u6211\u4eec\u5f00\u59cb\u8c03\u8bd5\u3002<\/p>\n
\u6280\u5de7\u4e00\uff1a\u6761\u4ef6\u65ad\u70b9\u2014\u2014\u53ea\u5728\u4f60\u5173\u5fc3\u7684\u65f6\u523b\u6682\u505c<\/h2>\n
\u95ee\u9898\u573a\u666f<\/strong>\uff1a\u70b9\u51fb\u201c\u6807\u8bb0\u5b8c\u6210\u201d\u65f6\uff0ctoggleDone<\/code> \u51fd\u6570\u4f1a\u88ab\u8c03\u7528\u591a\u6b21\u3002\u6211\u4eec\u53ea\u60f3\u5728 id<\/code> \u4e3a 2 \u7684\u65f6\u5019\u6682\u505c\uff0c\u89c2\u5bdf todo<\/code> \u5bf9\u8c61\u7684\u72b6\u6001\u3002<\/p>\n
\u64cd\u4f5c\u6b65\u9aa4<\/strong>\uff1a<\/p>\n
    \n
  1. \u5207\u6362\u5230 Sources<\/strong> \u9762\u677f\uff0c\u5728\u5de6\u4fa7\u6587\u4ef6\u6811\u4e2d\u627e\u5230 index.html<\/code>\uff0c\u70b9\u51fb\u884c\u53f7 36<\/code>\uff08function toggleDone(id) {<\/code> \u8fd9\u4e00\u884c\uff09\u8bbe\u7f6e\u65ad\u70b9\u3002<\/li>\n
  2. \u53f3\u952e\u70b9\u51fb\u8be5\u65ad\u70b9\uff0c\u9009\u62e9 Edit breakpoint…<\/strong>\u3002<\/li>\n
  3. \u5728\u8f93\u5165\u6846\u4e2d\u586b\u5199 id === 2<\/code>\uff0c\u6309\u56de\u8f66\u3002<\/li>\n
  4. \u73b0\u5728\u70b9\u51fb\u9875\u9762\u4e0a\u7684\u201c\u6807\u8bb0\u5b8c\u6210\u201d\u6309\u94ae\uff0c\u53ea\u6709 id \u4e3a 2 \u7684\u9879\u4f1a\u89e6\u53d1\u65ad\u70b9\u3002<\/li>\n<\/ol>\n
    \u6b64\u65f6\u5728 Scope<\/strong> \u9762\u677f\u4e2d\u53ef\u4ee5\u770b\u5230 id<\/code>\u3001todo<\/code> \u7b49\u53d8\u91cf\u7684\u503c\u3002\u4f60\u53ef\u4ee5\u5c06\u9f20\u6807\u60ac\u505c\u5728\u4ee3\u7801\u4e2d\u7684\u53d8\u91cf\u4e0a\u5feb\u901f\u67e5\u770b\uff0c\u6216\u5728 Console<\/strong> \u4e2d\u8f93\u5165 todo<\/code> \u56de\u8f66\u3002<\/p>\n
    \ud83d\udca1 \u8fdb\u9636<\/strong>\uff1a\u6761\u4ef6\u65ad\u70b9\u652f\u6301\u4efb\u4f55\u8fd4\u56de\u5e03\u5c14\u503c\u7684\u8868\u8fbe\u5f0f\uff0c\u4f8b\u5982 todos.length > 5<\/code> \u6216 todo.text.includes('\u6559\u7a0b')<\/code>\u3002\u5bf9\u4e8e\u5faa\u73af\u4e2d\u7684\u95ee\u9898\uff0c\u8fd9\u80fd\u8282\u7701\u5927\u91cf\u65f6\u95f4\u3002<\/p>\n
    \u6280\u5de7\u4e8c\uff1a\u65e5\u5fd7\u70b9\u2014\u2014\u4e0d\u4fee\u6539\u4ee3\u7801\u7684 console.log<\/h2>\n
    \u95ee\u9898\u573a\u666f<\/strong>\uff1a\u6211\u4eec\u60f3\u8ffd\u8e2a toggleDone<\/code> \u88ab\u8c03\u7528\u65f6\u4f20\u5165\u7684 id<\/code> \u548c\u5f53\u524d todos<\/code> \u7684\u72b6\u6001\uff0c\u4f46\u4e0d\u60f3\u5728\u6e90\u7801\u4e2d\u63d2\u5165 console.log<\/code>\uff08\u56e0\u4e3a\u4f1a\u6c61\u67d3\u4ee3\u7801\u4e14\u9700\u8981\u624b\u52a8\u5220\u9664\uff09\u3002<\/p>\n
    \u64cd\u4f5c\u6b65\u9aa4<\/strong>\uff1a<\/p>\n
      \n
    1. \u5728 Sources<\/code> \u9762\u677f\u4e2d\uff0c\u53f3\u952e\u70b9\u51fb\u884c\u53f7 36<\/code>\uff0c\u9009\u62e9 Add logpoint…<\/strong>\u3002<\/li>\n
    2. \u8f93\u5165 toggleDone \u88ab\u8c03\u7528, id: ${id}, todos: ${JSON.stringify(todos)}<\/code>\u3002<\/li>\n
    3. \u6309\u56de\u8f66\uff0c\u884c\u53f7\u65c1\u4f1a\u51fa\u73b0\u4e00\u4e2a\u6a59\u8272\u7684\u5c0f\u56fe\u6807\u3002<\/li>\n
    4. \u70b9\u51fb\u9875\u9762\u6309\u94ae\uff0c\u6240\u6709\u8c03\u7528\u90fd\u4f1a\u5728 Console \u4e2d\u8f93\u51fa\u65e5\u5fd7\uff0c\u4f46\u4e0d\u4f1a\u6682\u505c<\/strong>\u4ee3\u7801\u6267\u884c\u3002<\/li>\n<\/ol>\n
      \u65e5\u5fd7\u70b9\u672c\u8d28\u4e0a\u662f\u6ce8\u5165\u4e86 console.log<\/code>\uff0c\u4f46\u5b8c\u5168\u5728 DevTools \u4e2d\u7ba1\u7406\uff0c\u4e0d\u4f1a\u4fee\u6539\u6e90\u6587\u4ef6\u3002\u5bf9\u4e8e\u751f\u4ea7\u73af\u5883\u8c03\u8bd5\u6216\u4e34\u65f6\u6392\u67e5\uff0c\u8fd9\u662f\u6700\u5e72\u51c0\u7684\u65b9\u5f0f\u3002<\/p>\n
      \ud83d\udca1 \u6ce8\u610f<\/strong>\uff1a\u65e5\u5fd7\u70b9\u4e2d\u7684\u8868\u8fbe\u5f0f\u662f\u5728\u5f53\u524d\u4f5c\u7528\u57df\u6c42\u503c\u7684\uff0c\u53ef\u4ee5\u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf\u3002\u5982\u679c\u8868\u8fbe\u5f0f\u6709\u526f\u4f5c\u7528\uff08\u5982 i++<\/code>\uff09\uff0c\u8bf7\u8c28\u614e\u4f7f\u7528\u3002<\/p>\n
      \u6280\u5de7\u4e09\uff1a\u5f02\u6b65\u8c03\u8bd5\u4e0e Call Stack \u7684\u5999\u7528<\/h2>\n
      \u95ee\u9898\u573a\u666f<\/strong>\uff1atoggleDone<\/code> \u4e2d\u6709\u4e00\u4e2a setTimeout<\/code>\uff0c\u5982\u679c todo<\/code> \u5728\u5f02\u6b65\u56de\u8c03\u6267\u884c\u524d\u88ab\u5220\u9664\uff08\u867d\u7136\u793a\u4f8b\u4e2d\u672a\u5220\u9664\uff0c\u4f46\u771f\u5b9e\u573a\u666f\u5e38\u89c1\uff09\uff0c\u4f1a\u629b\u51fa\u9519\u8bef\u3002\u6211\u4eec\u60f3\u6355\u83b7\u8fd9\u4e2a\u9519\u8bef\u5e76\u67e5\u770b\u8c03\u7528\u6808\u3002<\/p>\n
      \u64cd\u4f5c\u6b65\u9aa4<\/strong>\uff1a<\/p>\n
        \n
      1. \u5728 Sources<\/code> \u9762\u677f\u4e2d\uff0c\u70b9\u51fb\u884c\u53f7 44<\/code>\uff08console.log('\u5f02\u6b65\u66f4\u65b0\u5b8c\u6210\u72b6\u6001', todo.id);<\/code>\uff09\u8bbe\u7f6e\u65ad\u70b9\u3002<\/li>\n
      2. \u786e\u4fdd Async<\/strong> \u590d\u9009\u6846\u88ab\u52fe\u9009\uff08\u5728 Call Stack \u9762\u677f\u9876\u90e8\uff09\u3002<\/li>\n
      3. \u70b9\u51fb\u9875\u9762\u6309\u94ae\uff0c\u65ad\u70b9\u4f1a\u5728 setTimeout<\/code> \u56de\u8c03\u4e2d\u6682\u505c\u3002<\/li>\n
      4. \u67e5\u770b Call Stack<\/strong>\uff1a\u4f60\u4f1a\u770b\u5230 toggleDone<\/code> \u7684\u5f02\u6b65\u8c03\u7528\u6808\uff0c\u751a\u81f3\u80fd\u8ffd\u6eaf\u5230\u4e8b\u4ef6\u76d1\u542c\u5668\u3002<\/li>\n<\/ol>\n
        \u72ec\u7279\u89c1\u89e3<\/strong>\uff1a\u5f88\u591a\u4eba\u4e0d\u77e5\u9053 Call Stack \u4e2d\u7684\u5f02\u6b65\u5806\u6808\u9700\u8981\u624b\u52a8\u5f00\u542f\u3002\u5728 DevTools \u53f3\u4e0a\u89d2\u70b9\u51fb\u4e09\u4e2a\u70b9 -> Settings<\/strong> -> Preferences<\/strong> -> \u52fe\u9009 Capture async stack traces<\/strong>\u3002\u8fd9\u6837\u5373\u4f7f\u8de8\u8d8a setTimeout<\/code>\u3001Promise<\/code>\uff0c\u4e5f\u80fd\u770b\u5230\u5b8c\u6574\u7684\u8c03\u7528\u94fe\u3002<\/p>\n
        \u6280\u5de7\u56db\uff1a\u6027\u80fd\u76d1\u89c6\u5668\u2014\u2014\u5b9e\u65f6\u53d1\u73b0\u5361\u987f\u5143\u51f6<\/h2>\n
        \u95ee\u9898\u573a\u666f<\/strong>\uff1a\u9875\u9762\u5728\u70b9\u51fb\u201c\u542f\u52a8\u5185\u5b58\u6cc4\u6f0f\u5b9a\u65f6\u5668\u201d\u540e\u9010\u6e10\u53d8\u5361\uff0c\u6211\u4eec\u60f3\u5b9e\u65f6\u67e5\u770b CPU \u548c\u5185\u5b58\u5360\u7528\u3002<\/p>\n
        \u64cd\u4f5c\u6b65\u9aa4<\/strong>\uff1a<\/p>\n
          \n
        1. \u6309 Esc<\/code> \u6253\u5f00 Drawer\uff08\u5e95\u90e8\u9762\u677f\uff09\uff0c\u70b9\u51fb Performance monitor<\/strong>\u3002<\/li>\n
        2. \u5728\u9762\u677f\u4e2d\u52fe\u9009 CPU usage<\/strong>\u3001JS heap size<\/strong>\u3001DOM Nodes<\/strong>\u3001Layout count<\/strong>\u3002<\/li>\n
        3. \u8fde\u7eed\u70b9\u51fb\u201c\u542f\u52a8\u5185\u5b58\u6cc4\u6f0f\u5b9a\u65f6\u5668\u201d\u6309\u94ae 10 \u6b21\uff0c\u89c2\u5bdf JS heap size \u548c DOM Nodes \u7684\u53d8\u5316\u3002<\/li>\n<\/ol>\n
          \u4f60\u4f1a\u770b\u5230 JS heap size \u6301\u7eed\u4e0a\u5347\uff0c\u56e0\u4e3a\u6bcf\u6b21\u70b9\u51fb\u90fd\u521b\u5efa\u4e86\u4e00\u4e2a 10 \u4e07\u5143\u7d20\u7684\u6570\u7ec4\u5e76\u6302\u5230 window.__leaked<\/code> \u4e0a\uff0c\u5bfc\u81f4\u5185\u5b58\u65e0\u6cd5\u56de\u6536\u3002<\/p>\n
          \ud83d\udca1 \u6700\u4f73\u5b9e\u8df5<\/strong>\uff1aPerformance monitor \u9002\u5408\u5feb\u901f\u5b9a\u4f4d\u201c\u662f\u5426\u6709\u6cc4\u6f0f\u201d\uff0c\u4f46\u5177\u4f53\u662f\u54ea\u4e2a\u5bf9\u8c61\u6cc4\u6f0f\uff0c\u9700\u8981\u7ed3\u5408 Memory \u9762\u677f\u3002<\/p>\n
          \u6280\u5de7\u4e94\uff1a\u5185\u5b58\u5feb\u7167\u2014\u2014\u5b9a\u4f4d\u6cc4\u6f0f\u5bf9\u8c61<\/h2>\n
          \u95ee\u9898\u573a\u666f<\/strong>\uff1a\u786e\u8ba4\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u540e\uff0c\u6211\u4eec\u9700\u8981\u627e\u51fa\u6cc4\u6f0f\u7684\u5177\u4f53\u5bf9\u8c61\u548c\u5f15\u7528\u8def\u5f84\u3002<\/p>\n
          \u64cd\u4f5c\u6b65\u9aa4<\/strong>\uff1a<\/p>\n
            \n
          1. \u5207\u6362\u5230 Memory<\/strong> \u9762\u677f\uff0c\u9009\u62e9 Heap snapshot<\/strong>\uff0c\u70b9\u51fb Take snapshot<\/strong>\u3002<\/li>\n
          2. \u5728\u9875\u9762\u4e2d\u70b9\u51fb\u201c\u542f\u52a8\u5185\u5b58\u6cc4\u6f0f\u5b9a\u65f6\u5668\u201d\u6309\u94ae 5 \u6b21\u3002<\/li>\n
          3. \u518d\u6b21\u70b9\u51fb Take snapshot<\/strong>\u3002<\/li>\n
          4. \u5728\u7b2c\u4e8c\u4e2a\u5feb\u7167\u7684 Summary<\/strong> \u89c6\u56fe\u4e2d\uff0c\u7b5b\u9009 Array<\/code>\uff0c\u4f60\u4f1a\u770b\u5230\u5927\u91cf Array<\/code> \u5bf9\u8c61\u3002<\/li>\n
          5. \u70b9\u51fb\u5176\u4e2d\u4e00\u4e2a\uff0c\u67e5\u770b Retainers<\/strong> \u9762\u677f\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u88ab window.__leaked<\/code> \u5f15\u7528\uff0c\u8fd9\u5c31\u662f\u6cc4\u6f0f\u7684\u6839\u6e90\u3002<\/li>\n<\/ol>\n
            \u72ec\u7279\u89c1\u89e3<\/strong>\uff1a\u6bd4\u8f83\u4e24\u4e2a\u5feb\u7167\u65f6\uff0c\u4f7f\u7528 Comparison<\/strong> \u89c6\u56fe\uff0c\u9009\u62e9\u7b2c\u4e00\u4e2a\u5feb\u7167\u4f5c\u4e3a\u57fa\u7ebf\uff0c\u53ef\u4ee5\u76f4\u89c2\u770b\u5230\u65b0\u589e\u7684\u5bf9\u8c61\u3002\u5bf9\u4e8e\u5927\u578b\u5e94\u7528\uff0c\u8fd9\u80fd\u5feb\u901f\u5b9a\u4f4d\u5230\u6cc4\u6f0f\u7684\u7ec4\u4ef6\u6216\u6a21\u5757\u3002<\/p>\n
            \u6280\u5de7\u516d\uff1a\u8986\u76d6\u7387\u5206\u6790\u2014\u2014\u627e\u51fa\u672a\u4f7f\u7528\u7684\u4ee3\u7801<\/h2>\n
            \u95ee\u9898\u573a\u666f<\/strong>\uff1a\u9879\u76ee\u5f15\u5165\u4e86\u7b2c\u4e09\u65b9\u5e93\uff0c\u4f46\u53ea\u7528\u4e86\u5176\u4e2d\u4e00\u5c0f\u90e8\u5206\uff0c\u60f3\u77e5\u9053\u54ea\u4e9b\u4ee3\u7801\u4ece\u672a\u6267\u884c\u3002<\/p>\n
            \u64cd\u4f5c\u6b65\u9aa4<\/strong>\uff1a<\/p>\n
              \n
            1. \u6309 Ctrl+Shift+P<\/code>\uff08Mac \u4e3a Cmd+Shift+P<\/code>\uff09\u6253\u5f00\u547d\u4ee4\u83dc\u5355\uff0c\u8f93\u5165 Coverage<\/code>\uff0c\u9009\u62e9 Show Coverage<\/strong>\u3002<\/li>\n
            2. \u70b9\u51fb Record<\/strong> \u6309\u94ae\uff08\u5706\u5f62\u56fe\u6807\uff09\uff0c\u7136\u540e\u5237\u65b0\u9875\u9762\u5e76\u64cd\u4f5c\u51e0\u6b21\u3002<\/li>\n
            3. \u70b9\u51fb Stop<\/strong>\uff0c\u4f60\u4f1a\u770b\u5230\u6bcf\u4e2a\u6587\u4ef6\u7684\u4ee3\u7801\u4f7f\u7528\u7387\u3002<\/li>\n
            4. \u70b9\u51fb\u67d0\u4e2a\u6587\u4ef6\uff0c\u672a\u4f7f\u7528\u7684\u4ee3\u7801\u4f1a\u4ee5\u7ea2\u8272\u9ad8\u4eae\u663e\u793a\u3002<\/li>\n<\/ol>\n
              \u8fd9\u5bf9\u4e8e\u4f18\u5316\u6253\u5305\u4f53\u79ef\u975e\u5e38\u6709\u7528\u2014\u2014\u4f60\u53ef\u4ee5\u636e\u6b64\u914d\u7f6e Tree Shaking \u6216\u6309\u9700\u52a0\u8f7d\u3002<\/p>\n
              \u5e38\u89c1\u5751\u4e0e\u6ce8\u610f\u4e8b\u9879<\/h2>\n
                \n
              • \u65ad\u70b9\u4e0d\u751f\u6548<\/strong>\uff1a\u68c0\u67e5\u662f\u5426\u5f00\u542f\u4e86 Deactivate breakpoints<\/strong>\uff08Sources \u9762\u677f\u5de6\u4e0a\u89d2\u7684\u6682\u505c\u56fe\u6807\uff09\u3002\u53e6\u5916\uff0c\u5982\u679c\u4ee3\u7801\u88ab\u538b\u7f29\u6216 sourcemap \u4e0d\u6b63\u786e\uff0c\u65ad\u70b9\u53ef\u80fd\u6620\u5c04\u5230\u9519\u8bef\u4f4d\u7f6e\u3002<\/li>\n
              • \u65e5\u5fd7\u70b9\u8f93\u51fa\u5bf9\u8c61<\/strong>\uff1aconsole.log<\/code> \u8f93\u51fa\u5bf9\u8c61\u65f6\u662f\u5f15\u7528\uff0c\u5c55\u5f00\u65f6\u53ef\u80fd\u5df2\u7ecf\u53d8\u5316\u3002\u5efa\u8bae\u4f7f\u7528 JSON.stringify<\/code> \u6216 console.log(JSON.parse(JSON.stringify(obj)))<\/code> \u6df1\u62f7\u8d1d\u5feb\u7167\u3002<\/li>\n
              • \u5185\u5b58\u5feb\u7167\u8fc7\u5927<\/strong>\uff1a\u5feb\u7167\u4f1a\u5360\u7528\u5927\u91cf\u5185\u5b58\uff0c\u5efa\u8bae\u5728\u64cd\u4f5c\u524d\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6570\u636e\uff0c\u5e76\u5173\u95ed\u5176\u4ed6\u6807\u7b7e\u9875\u3002<\/li>\n
              • \u6027\u80fd\u5206\u6790<\/strong>\uff1a\u4f7f\u7528 Performance \u9762\u677f\u5f55\u5236\u65f6\uff0c\u5c3d\u91cf\u4fdd\u6301\u64cd\u4f5c\u5355\u4e00\uff0c\u907f\u514d\u540c\u65f6\u8fdb\u884c\u7f51\u7edc\u8bf7\u6c42\u7b49\u5e72\u6270\u56e0\u7d20\u3002<\/li>\n<\/ul>\n
                \u603b\u7ed3\u4e0e\u4e0b\u4e00\u6b65<\/h2>\n
                \u672c\u6587\u901a\u8fc7\u4e00\u4e2a\u793a\u4f8b\u5e94\u7528\uff0c\u5b9e\u8df5\u4e86 Chrome DevTools \u7684\u516d\u5927\u9ad8\u7ea7\u8c03\u8bd5\u6280\u5de7\uff1a\u6761\u4ef6\u65ad\u70b9\u3001\u65e5\u5fd7\u70b9\u3001\u5f02\u6b65\u8c03\u7528\u6808\u3001\u6027\u80fd\u76d1\u89c6\u5668\u3001\u5185\u5b58\u5feb\u7167\u548c\u8986\u76d6\u7387\u5206\u6790\u3002\u8fd9\u4e9b\u6280\u5de7\u80fd\u5e2e\u4f60\u4ece\u201c\u76f2\u76ee console\u201d\u8fdb\u9636\u5230\u201c\u7cbe\u51c6\u5b9a\u4f4d\u201d\u3002<\/p>\n
                \u4e0b\u4e00\u6b65\u5efa\u8bae<\/strong>\uff1a<\/p>\n
                  \n
                • \u5b66\u4e60 Performance<\/strong> \u9762\u677f\u7684\u706b\u7130\u56fe\uff0c\u5206\u6790\u957f\u4efb\u52a1\u548c\u6e32\u67d3\u74f6\u9888\u3002<\/li>\n
                • \u63a2\u7d22 Application<\/strong> \u9762\u677f\u4e2d\u7684 Service Workers \u548c\u7f13\u5b58\u8c03\u8bd5\u3002<\/li>\n
                • \u4e86\u89e3 Remote Debugging<\/strong>\uff0c\u5728\u79fb\u52a8\u8bbe\u5907\u4e0a\u4f7f\u7528 DevTools\u3002<\/li>\n<\/ul>\n
                  \u8c03\u8bd5\u662f\u4e00\u95e8\u5b9e\u8df5\u6280\u80fd\uff0c\u6253\u5f00\u4f60\u7684\u9879\u76ee\uff0c\u5c1d\u8bd5\u7528\u8fd9\u4e9b\u6280\u5de7\u89e3\u51b3\u4e00\u4e2a\u771f\u5b9e Bug \u5427\u3002<\/p>\n
                  > \u672c\u6587\u793a\u4f8b\u4ee3\u7801\u53ef\u5728\u672c\u5730\u4fdd\u5b58\u4e3a index.html<\/code> \u76f4\u63a5\u8fd0\u884c\u3002\u6240\u6709\u64cd\u4f5c\u57fa\u4e8e Chrome 120+ \u7248\u672c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                  \u672c\u6587\u9762\u5411\u6709\u4e00\u5230\u4e09\u5e74\u7ecf\u9a8c\u7684\u524d\u7aef\u5f00\u53d1\u8005\uff0c\u6df1\u5165\u8bb2\u89e3 Chrome DevTools \u4e2d\u6761\u4ef6\u65ad\u70b9\u3001\u65e5\u5fd7\u70b9\u3001\u6027\u80fd\u76d1\u89c6\u3001\u5185\u5b58\u5206\u6790\u7b49\u9ad8\u7ea7\u8c03\u8bd5\u6280\u5de7\u3002\u901a\u8fc7\u771f\u5b9e\u4ee3\u7801\u793a\u4f8b\u548c\u5206\u6b65\u64cd\u4f5c\uff0c\u5e2e\u52a9\u4f60\u5feb\u901f\u5b9a\u4f4d\u590d\u6742 Bug \u548c\u6027\u80fd\u74f6\u9888\uff0c\u63d0\u5347\u8c03\u8bd5\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,4],"tags":[34,37,8,249,6],"class_list":["post-267","post","type-post","status-publish","format-standard","hentry","category-3","category-4","tag-chrome-devtools","tag-javascript","tag-8","tag-249","tag-6"],"_links":{"self":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/posts\/267","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=267"}],"version-history":[{"count":0,"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/posts\/267\/revisions"}],"wp:attachment":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}