{"id":171763,"date":"2024-05-08T17:36:36","date_gmt":"2024-05-08T09:36:36","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/171763.html"},"modified":"2024-05-08T17:36:51","modified_gmt":"2024-05-08T09:36:51","slug":"chrome%e6%89%a9%e5%b1%95%e5%bc%80%e5%8f%91%e5%a6%82%e4%bd%95%e5%9c%a8%e9%a1%b5%e9%9d%a2%e5%8a%a0%e8%bd%bd%e6%97%b6%e5%b0%b1%e6%94%b9%e5%8f%98%e5%85%b6%e4%b8%ad%e7%9a%84%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/171763.html","title":{"rendered":"chrome\u6269\u5c55\u5f00\u53d1\u5982\u4f55\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u5c31\u6539\u53d8\u5176\u4e2d\u7684\u5143\u7d20"},"content":{"rendered":"

\"chrome\u6269\u5c55\u5f00\u53d1\u5982\u4f55\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u5c31\u6539\u53d8\u5176\u4e2d\u7684\u5143\u7d20\"<\/p>\n

\u7f51\u9875\u5143\u7d20\u53ef\u4ee5\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u5c31\u88ab\u6539\u53d8\uff0c\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a\u521b\u5efa\u5408\u9002\u7684Chrome\u6269\u5c55\u73af\u5883\u3001\u4f7f\u7528content scripts\u6ce8\u5165Javascript\u4ee3\u7801\u3001\u76d1\u542cDOMContentLoaded\u4e8b\u4ef6\u3001\u5229\u7528Chrome\u6269\u5c55API\u63a7\u5236\u7f51\u9875\u5143\u7d20<\/strong>\u3002\u5728\u5b9e\u73b0\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728content scripts\u5f53\u4e2d\u76d1\u542cDOMContentLoaded\u4e8b\u4ef6\u6765\u786e\u4fdd\u5728DOM\u6811\u6784\u5efa\u5b8c\u6210\u540e\uff0c\u5728\u9875\u9762\u5b8c\u5168\u52a0\u8f7d\u4e4b\u524d\u6539\u53d8\u9875\u9762\u5143\u7d20\u3002<\/p>\n<\/p>\n

\u521b\u5efa\u5408\u9002\u7684Chrome\u6269\u5c55\u73af\u5883<\/strong>\u662f\u57fa\u7840\uff0c\u4f60\u9700\u8981\u6309\u7167Chrome\u6269\u5c55\u7684\u89c4\u8303\u8bbe\u7f6emanifest.json\u6587\u4ef6\u3002\u6b64\u6587\u4ef6\u5b9a\u4e49\u4e86\u6269\u5c55\u7684\u57fa\u672c\u4fe1\u606f\u4ee5\u53ca\u5b83\u5c06\u5982\u4f55\u4e0e\u6d4f\u89c8\u5668\u4ea4\u4e92\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u8bf4\u660e\u6bcf\u4e00\u4e2a\u6b65\u9aa4\u7684\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u521b\u5efaCHROME\u6269\u5c55\u73af\u5883<\/h2>\n<\/p>\n

\u5728\u5f00\u59cb\u7f16\u5199\u4efb\u4f55\u4ee3\u7801\u4e4b\u524d\uff0c\u4f60\u9700\u8981\u914d\u7f6eChrome\u6269\u5c55\u7684\u6e05\u5355\u6587\u4ef6\uff08manifest.json\uff09\u3002\u8fd9\u4e2a\u6587\u4ef6\u662f\u6269\u5c55\u7684\u84dd\u56fe\uff0c\u5411Chrome\u58f0\u660e\u4e86\u6269\u5c55\u5c06\u8981\u4f7f\u7528\u7684\u6743\u9650\u3001\u5305\u542b\u7684\u6587\u4ef6\u548c\u6269\u5c55\u7684\u4e00\u4e9b\u5143\u6570\u636e\u3002<\/p>\n<\/p>\n

{<\/p>\n
  "manifest_version": 2,<\/p>\n
  "name": "Page Element Modifier",<\/p>\n
  "version": "1.0",<\/p>\n
  "description": "Modify webpage elements as it loads",<\/p>\n
  "permissions": [<\/p>\n
    "activeTab"<\/p>\n
  ],<\/p>\n
  "content_scripts": [<\/p>\n
    {<\/p>\n
      "matches": ["<all_urls>"],<\/p>\n
      "js": ["content.js"],<\/p>\n
      "run_at": "document_start"<\/p>\n
    }<\/p>\n
  ]<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u6e05\u5355\u6587\u4ef6\u4e2d\uff0ccontent_scripts<\/strong>\u5b57\u6bb5\u975e\u5e38\u5173\u952e\u3002\u5b83\u544a\u8bc9\u6d4f\u89c8\u5668\u5c06\u7279\u5b9a\u7684JavaScript\u6587\u4ef6\u6ce8\u5165\u5230\u4e0e\u6e05\u5355\u4e2d\u7684\u6a21\u5f0f\u5339\u914d\u7684\u6240\u6709\u9875\u9762\u4e2d\u3002\u901a\u8fc7\u8bbe\u7f6e"run_at": "document_start"\uff0c\u53ef\u4ee5\u786e\u4fdd\u5728\u6587\u6863\u6e32\u67d3\u4e4b\u524d\uff0c\u4f46\u5728\u5176\u4ed6\u8d44\u6e90\uff08\u4f8b\u5982\u56fe\u7247\u548cCSS\u6587\u4ef6\uff09\u52a0\u8f7d\u4e4b\u524d\u8fd0\u884c\u811a\u672c\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528CONTENT SCRIPTS\u6ce8\u5165JAVASCRIPT\u4ee3\u7801<\/h2>\n<\/p>\n
Content scripts\u662fChrome\u6269\u5c55\u4e2d\u7528\u6765\u4e0e\u7f51\u9875\u5185\u5bb9\u76f4\u63a5\u4ea4\u4e92\u7684\u811a\u672c\u3002\u8fd9\u4e9b\u811a\u672c\u8fd0\u884c\u5728\u666e\u901a\u7f51\u9875\u7684\u4e0a\u4e0b\u6587\u4e2d\uff0c\u53ef\u4ee5\u8bfb\u53d6\u548c\u4fee\u6539\u7f51\u9875\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u5728\u4f60\u7684Chrome\u6269\u5c55\u4e2d\uff0c\u9700\u8981\u521b\u5efa\u4e00\u4e2acontent.js\u6587\u4ef6\uff0c\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u7684\u4ee3\u7801\u5c06\u88ab\u63d2\u5165\u5230\u6240\u6709\u7b26\u5408matches\u6761\u4ef6\u7684\u9875\u9762\u4e2d\uff1a<\/p>\n<\/p>\n
document.addEventListener('DOMContentLoaded', function() {<\/p>\n
  \/\/ \u5728\u8fd9\u91cc\u7f16\u5199\u4fee\u6539DOM\u7684\u4ee3\u7801<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u76d1\u542cDOMContentLoaded\u4e8b\u4ef6<\/h2>\n<\/p>\n
DOMContentLoaded\u4e8b\u4ef6\u5728\u6587\u6863\u7684DOM\u6811\u51c6\u5907\u5c31\u7eea\u65f6\u89e6\u53d1<\/strong>\uff0c\u8fd9\u610f\u5473\u7740\u4f60\u53ef\u4ee5\u5728\u65e0\u9700\u7b49\u5f85\u6837\u5f0f\u8868\u3001\u56fe\u50cf\u548c\u5b50\u6846\u67b6\u5b8c\u6210\u52a0\u8f7d\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u4f60\u7684\u811a\u672c\u3002\u901a\u8fc7\u5728content script\u91cc\u9762\u76d1\u542c\u8fd9\u4e2a\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u5728DOM\u51c6\u5907\u597d\u4e4b\u540e\u3001\u9875\u9762\u5176\u4ed6\u90e8\u5206\uff08\u4f8b\u5982\u56fe\u7247\u7b49\uff09\u5b8c\u6210\u52a0\u8f7d\u524d\uff0c\u4fee\u6539\u9875\u9762\u5143\u7d20\u3002<\/p>\n<\/p>\n
document.addEventListener('DOMContentLoaded', function() {<\/p>\n
  var element = document.getElementById('element-id');<\/p>\n
  if(element) {<\/p>\n
    element.textContent = 'New Content';<\/p>\n
  }<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u5229\u7528CHROME\u6269\u5c55API\u63a7\u5236\u7f51\u9875\u5143\u7d20<\/h2>\n<\/p>\n
\u9664\u4e86\u76f4\u63a5\u64cd\u4f5cDOM\u4e4b\u5916\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528Chrome\u6269\u5c55API\u6765\u5b9e\u73b0\u66f4\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u5982\u4f7f\u7528chrome.tabs API\u628a\u6ce8\u5165\u7684\u811a\u672c\u53d1\u9001\u5230\u5f53\u524d\u6d3b\u52a8\u7684\u6807\u7b7e\u9875\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u9700\u8981\u5728\u7528\u6237\u6253\u5f00\u65b0\u6807\u7b7e\u9875\u65f6\u5c31\u4fee\u6539\u8be5\u9875\u9762\u5143\u7d20\uff0c\u4f60\u53ef\u4ee5\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u4f60\u7684background script\u4e2d\uff1a<\/p>\n<\/p>\n
chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {<\/p>\n
  if (changeInfo.status === 'complete' && tab.active) {<\/p>\n
    chrome.tabs.executeScript(tabId, {file: 'content.js'});<\/p>\n
  }<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u5728\u6bcf\u4e2a\u6807\u7b7e\u9875\u52a0\u8f7d\u5b8c\u6210\u540e\u6267\u884ccontent.js<\/code>\uff0c\u5982\u679c\u4f60\u7684content.js<\/code>\u4e2d\u5305\u542b\u4e86\u4e0a\u9762\u63d0\u5230\u7528\u4e8e\u4fee\u6539DOM\u5143\u7d20\u7684\u4ee3\u7801\uff0c\u90a3\u4e48\u8be5\u811a\u672c\u5c31\u4f1a\u5728\u6bcf\u4e2a\u6807\u7b7e\u9875\u52a0\u8f7d\u5b8c\u6bd5\u65f6\u8fd0\u884c\u3002<\/p>\n<\/p>\n
\u8fd9\u4e9b\u6b65\u9aa4\u5408\u8d77\u6765\u5c31\u63d0\u4f9b\u4e86\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u7528Chrome\u6269\u5c55\u6539\u53d8\u9875\u9762\u5143\u7d20\u7684\u57fa\u7840\u65b9\u6848<\/strong>\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u6cd5\uff0c\u6269\u5c55\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u7528\u6237\u7684\u6d4f\u89c8\u4f53\u9a8c\u4e2d\u65e0\u7f1d\u5730\u5d4c\u5165\u5b9e\u7528\u529f\u80fd\uff0c\u4e0d\u4ec5\u63d0\u5347\u4e86\u7528\u6237\u4f53\u9a8c\uff0c\u8fd8\u80fd\u591f\u7ed9\u7528\u6237\u63d0\u4f9b\u5b9a\u5236\u5316\u7684\u6d4f\u89c8\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u5982\u4f55\u4f7f\u7528Chrome\u6269\u5c55\u5f00\u53d1\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u6539\u53d8\u5143\u7d20\uff1f<\/strong><\/p>\n
\u5728Chrome\u6269\u5c55\u5f00\u53d1\u4e2d\uff0c\u8981\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u6539\u53d8\u5143\u7d20\uff0c\u53ef\u4ee5\u901a\u8fc7content script\u6765\u5b9e\u73b0\u3002content script\u662f\u6ce8\u5165\u5230Web\u9875\u9762\u4e2d\u7684\u811a\u672c\uff0c\u5b83\u53ef\u4ee5\u8bbf\u95ee\u9875\u9762\u7684DOM\u5143\u7d20\u5e76\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6b65\u9aa4\uff1a<\/p>\n
    \n
  • \u5728\u6269\u5c55\u6e05\u5355\u6587\u4ef6\uff08manifest.json\uff09\u4e2d\u58f0\u660econtent script\uff0c\u6307\u5b9a\u8981\u6ce8\u5165\u7684\u9875\u9762\u548c\u6267\u884c\u7684\u811a\u672c\u6587\u4ef6\u3002<\/li>\n
  • \u5728content script\u6587\u4ef6\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528DOM API\uff08\u4f8b\u5982document.getElementById()\uff09\u6765\u8bbf\u95ee\u548c\u4fee\u6539\u9875\u9762\u5143\u7d20\u3002\u901a\u8fc7\u76d1\u542c\u9875\u9762\u52a0\u8f7d\u4e8b\u4ef6\uff08\u5982DOMContentLoaded\uff09\u6216\u4f7f\u7528MutationObserver\u6765\u6355\u6349\u9875\u9762\u5143\u7d20\u7684\u53d8\u5316\uff0c\u5e76\u8fdb\u884c\u4f60\u60f3\u8981\u7684\u4fee\u6539\u64cd\u4f5c\u3002<\/li>\n
  • \u4fee\u6539\u5143\u7d20\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u53ef\u4ee5\u76f4\u63a5\u66f4\u6539\u5143\u7d20\u7684\u5c5e\u6027\u3001\u6837\u5f0f\uff0c\u6216\u8005\u64cd\u4f5c\u5143\u7d20\u7684\u5b50\u8282\u70b9\u8fdb\u884c\u4fee\u6539\u3002<\/li>\n<\/ul>\n
    2. \u5982\u4f55\u4f7f\u7528Chrome\u6269\u5c55\u5f00\u53d1\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u66ff\u6362\u6216\u6dfb\u52a0\u65b0\u7684\u5143\u7d20\uff1f<\/strong><\/p>\n
    \u60f3\u8981\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u66ff\u6362\u6216\u6dfb\u52a0\u65b0\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u901a\u8fc7content script\u4e2d\u7684DOM\u64cd\u4f5c\u6765\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6b65\u9aa4\uff1a<\/p>\n
      \n
    • \u4f7f\u7528content script\u6ce8\u5165\u5230\u76ee\u6807\u9875\u9762\u4e2d\uff0c\u4ee5\u4fbf\u8bbf\u95ee\u9875\u9762\u7684DOM\u5143\u7d20\u3002<\/li>\n
    • \u4f7f\u7528DOM API\uff08\u5982createElement()\u3001appendChild()\uff09\u521b\u5efa\u65b0\u7684\u5143\u7d20\u6216\u8005\u590d\u5236\u73b0\u6709\u5143\u7d20\u3002<\/li>\n
    • \u4f7f\u7528insertBefore()\u3001replaceChild()\u7b49\u65b9\u6cd5\u66ff\u6362\u6216\u63d2\u5165\u65b0\u7684\u5143\u7d20\u5230\u76ee\u6807\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n
      \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u64cd\u4f5c\u9875\u9762\u5143\u7d20\u65f6\uff0c\u8981\u786e\u4fdd\u5728DOM\u52a0\u8f7d\u5b8c\u6210\u540e\u8fdb\u884c\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528DOMContentLoaded\u4e8b\u4ef6\u8fdb\u884c\u76d1\u542c\u3002\u6b64\u5916\uff0c\u8fd8\u9700\u8981\u8003\u8651\u9875\u9762\u7684\u7ed3\u6784\u548cCSS\u6837\u5f0f\uff0c\u4ee5\u786e\u4fdd\u65b0\u6dfb\u52a0\u7684\u5143\u7d20\u4e0e\u9875\u9762\u7684\u5e03\u5c40\u4e00\u81f4\u3002<\/p>\n
      3. \u5982\u4f55\u4f7f\u7528Chrome\u6269\u5c55\u5f00\u53d1\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u901a\u8fc7AJAX\u8bf7\u6c42\u4fee\u6539\u5143\u7d20\u5185\u5bb9\uff1f<\/strong><\/p>\n
      \u5982\u679c\u9700\u8981\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u901a\u8fc7AJAX\u8bf7\u6c42\u4fee\u6539\u5143\u7d20\u5185\u5bb9\uff0c\u53ef\u4ee5\u501f\u52a9content script\u6765\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6b65\u9aa4\uff1a<\/p>\n
        \n
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