{"id":168017,"date":"2024-05-08T16:14:56","date_gmt":"2024-05-08T08:14:56","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/168017.html"},"modified":"2024-05-08T16:15:04","modified_gmt":"2024-05-08T08:15:04","slug":"javascript-%e4%b8%ad%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e5%af%8c%e6%96%87%e6%9c%ac%e7%bc%96%e8%be%91%e5%99%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/168017.html","title":{"rendered":"JavaScript \u4e2d\u600e\u4e48\u5b9e\u73b0\u5bcc\u6587\u672c\u7f16\u8f91\u5668"},"content":{"rendered":"

\"JavaScript<\/p>\n

JavaScript\u5b9e\u73b0\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u7684\u6838\u5fc3\u6280\u672f\u5305\u62ecDOM\u64cd\u4f5c\u3001\u4e8b\u4ef6\u76d1\u542c\u3001\u5185\u5bb9\u53ef\u7f16\u8f91\u5c5e\u6027\uff08contenteditable\uff09\u3001\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff08Document Object Model\uff09\u7684execCommand\u65b9\u6cd5<\/strong>\u3002\u9996\u5148\uff0c\u4f7f\u7528contenteditable<\/code>\u5c5e\u6027\u53ef\u4ee5\u8ba9\u666e\u901a\u7684HTML\u5143\u7d20\u53d8\u6210\u53ef\u7f16\u8f91\u72b6\u6001\uff0c\u7528\u6237\u4fbf\u53ef\u4ee5\u5728\u5176\u4e2d\u8f93\u5165\u6587\u5b57\u3001\u56fe\u7247\u7b49\u5185\u5bb9\u3002\u5176\u6b21\uff0c\u901a\u8fc7\u76d1\u542c\u952e\u76d8\u3001\u9f20\u6807\u7b49\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u5bf9\u7528\u6237\u7684\u8f93\u5165\u884c\u4e3a\u8fdb\u884c\u54cd\u5e94\u548c\u63a7\u5236\u3002\u6b64\u5916\uff0cexecCommand<\/code>\u65b9\u6cd5\u662f\u5b9e\u65bd\u5bcc\u6587\u672c\u64cd\u4f5c\u7684\u5173\u952e\uff0c\u5b83\u53ef\u4ee5\u6267\u884c\u8bf8\u5982\u52a0\u7c97\u3001\u659c\u4f53\u3001\u66f4\u6539\u5b57\u4f53\u5927\u5c0f\u7b49\u547d\u4ee4\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e9b\u6280\u672f\uff0c\u6784\u5efa\u51fa\u529f\u80fd\u5b8c\u5907\u7684\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7406\u89e3contenteditable\u5c5e\u6027<\/h3>\n<\/p>\n

\u5229\u7528contenteditable<\/code>\u5c5e\u6027\uff0c web\u5f00\u53d1\u4eba\u5458\u80fd\u591f\u5c06\u4efb\u4f55HTML\u5143\u7d20\u8f6c\u6362\u4e3a\u53ef\u7f16\u8f91\u533a\u57df<\/strong>\u3002\u901a\u8fc7\u7b80\u5355\u5730\u5c06\u8fd9\u4e2a\u5c5e\u6027\u8bbe\u7f6e\u4e3atrue<\/code>\uff0c\u7528\u6237\u5c31\u80fd\u591f\u5728\u6d4f\u89c8\u5668\u4e2d\u76f4\u63a5\u7f16\u8f91\u5143\u7d20\u7684\u5185\u5bb9\u3002\u8fd9\u662f\u521b\u5efa\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u7684\u57fa\u7840\u6b65\u9aa4\u4e4b\u4e00\u3002<\/p>\n<\/p>\n

\u4e3a\u4e86\u4f7f\u4e00\u4e2a\u5143\u7d20\u53d8\u5f97\u53ef\u7f16\u8f91\uff0c\u6211\u4eec\u9700\u8981\uff1a<\/p>\n<\/p>\n

    \n
  1. \u5c06contenteditable<\/code>\u8bbe\u7f6e\u4e3atrue<\/code>\u3002<\/li>\n
  2. \u5b9a\u4e49\u8be5\u5143\u7d20\u7684\u6837\u5f0f\uff0c\u4ee5\u4fbf\u5b83\u770b\u8d77\u6765\u548c\u611f\u89c9\u5c31\u50cf\u4e00\u4e2a\u7f16\u8f91\u5668\u3002<\/li>\n<\/ol>\n

    \u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n

    <div contenteditable="true" id="editor" style="border:1px solid #ccc; min-height:100px; padding:10px;"><\/p>\n
        \u8f93\u5165\u6587\u5b57...<\/p>\n
    <\/div><\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e8c\u3001\u4f7f\u7528execCommand\u65b9\u6cd5<\/h3>\n<\/p>\n
    \u501f\u52a9document.execCommand<\/code>\u65b9\u6cd5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6267\u884c\u4e00\u7cfb\u5217\u7684\u547d\u4ee4\u6765\u64cd\u4f5c\u6587\u672c\u7684\u683c\u5f0f<\/strong>\u3002\u8fd9\u4e2a\u65b9\u6cd5\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a\u4e00\u4e2a\u8868\u793a\u547d\u4ee4\u7684\u5b57\u7b26\u4e32\uff08\u5982 bold<\/code> \u8868\u793a\u52a0\u7c97\uff09\u3001\u4e00\u4e2a\u8868\u793a\u8fd9\u4e2a\u547d\u4ee4\u662f\u5426\u9700\u8981\u7528\u6237\u4ea4\u4e92\u7684\u5e03\u5c14\u503c\u3001\u4ee5\u53ca\u4e00\u4e2a\u53ef\u9009\u7684\u547d\u4ee4\u53c2\u6570\uff08\u5982\u5b57\u4f53\u540d\u79f0\u6216\u94fe\u63a5URL\uff09\u3002<\/p>\n<\/p>\n
    \u800c\u521b\u5efa\u7f16\u8f91\u5668\u529f\u80fd\u6309\u94ae\u65f6\uff0c\u4f1a\u4f7f\u7528\u8be5\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
      \n
    1. \u521b\u5efa\u4e00\u4e2a\u6309\u94ae\uff0c\u7528\u4e8e\u89e6\u53d1\u7279\u5b9a\u7684\u6587\u672c\u683c\u5f0f\u66f4\u6539\u3002<\/li>\n
    2. \u7ed1\u5b9a\u4e00\u4e2a\u4e8b\u4ef6\u4fa6\u542c\u5668\u5230\u8fd9\u4e2a\u6309\u94ae\uff0c\u4ee5\u8c03\u7528execCommand<\/code>\u3002<\/li>\n<\/ol>\n
      \u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
      <button onclick="document.execCommand('bold', false, '')">\u52a0\u7c97<\/button><\/p>\n
      <button onclick="document.execCommand('italic', false, '')">\u659c\u4f53<\/button><\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u4e09\u3001\u96c6\u6210\u7b2c\u4e09\u65b9\u5e93<\/h3>\n<\/p>\n
      \u73b0\u4eca\u6709\u5f88\u591a\u6210\u719f\u7684\u7b2c\u4e09\u65b9\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u5e93\uff0c\u5982TinyMCE\u3001CKEditor\u3001Quill<\/strong> \u7b49\uff0c\u5b83\u4eec\u4f7f\u7528JavaScript\u6784\u5efa\u4e86\u5b8c\u6574\u529f\u80fd\u7684\u7f16\u8f91\u5668\u3002\u8fd9\u4e9b\u5e93\u63d0\u4f9b\u4e86\u81ea\u5b9a\u4e49\u9009\u9879\u3001\u63d2\u4ef6\u652f\u6301\u548c\u8de8\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u3002<\/p>\n<\/p>\n
      \u5982\u679c\u9700\u8981\u5feb\u901f\u96c6\u6210\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u8fd9\u4e9b\u7b2c\u4e09\u65b9\u5e93\uff1a<\/p>\n<\/p>\n
        \n
      1. \u9009\u62e9\u4e00\u4e2a\u5408\u9002\u7684\u7b2c\u4e09\u65b9\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u5e93\u3002<\/li>\n
      2. \u9075\u5faa\u5176\u96c6\u6210\u6587\u6863\uff0c\u5c06\u5e93\u5d4c\u5165\u5230\u4f60\u7684web\u5e94\u7528\u4e2d\u3002<\/li>\n<\/ol>\n
        \u56db\u3001\u81ea\u5b9a\u4e49\u7f16\u8f91\u5668\u529f\u80fd<\/h3>\n<\/p>\n
        \u81ea\u5b9a\u4e49\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u529f\u80fd\u662f\u4e2a\u6280\u672f\u6311\u6218\uff0c\u9700\u8981\u5f00\u53d1\u8005\u6df1\u5165\u7406\u89e3DOM\u64cd\u4f5c\u3001\u4e8b\u4ef6\u5904\u7406\u53ca\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u95ee\u9898<\/strong>\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u6dfb\u52a0\u81ea\u5b9a\u4e49\u6309\u94ae\u548c\u529f\u80fd\uff0c\u5bf9\u7f16\u8f91\u5668\u8fdb\u884c\u6269\u5c55\u3002<\/p>\n<\/p>\n
        \u4f8b\u5982\uff0c\u5411\u7f16\u8f91\u5668\u6dfb\u52a0\u56fe\u50cf\u4e0a\u4f20\u529f\u80fd\uff0c\u9700\u8981\uff1a<\/p>\n<\/p>\n
          \n
        1. \u521b\u5efa\u56fe\u50cf\u4e0a\u4f20\u6309\u94ae\u548c\u6587\u4ef6\u9009\u62e9\u8f93\u5165\u3002<\/li>\n
        2. \u4f7f\u7528JavaScript\u76d1\u542c\u6587\u4ef6\u9009\u62e9\u4e8b\u4ef6\u3002<\/li>\n
        3. \u4f7f\u7528File API\u8bfb\u53d6\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u63d2\u5165\u5230\u7f16\u8f91\u5668\u7684\u5185\u5bb9\u4e2d\u3002<\/li>\n<\/ol>\n
          \u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
          <input type="file" id="imageUpload" \/><\/p>\n
          <script><\/p>\n
              document.getElementById('imageUpload').addEventListener('change', function(event){<\/p>\n
                  var reader = new FileReader();<\/p>\n
                  reader.onload = function(e) {<\/p>\n
                      document.execCommand('insertImage', false, e.target.result);<\/p>\n
                  };<\/p>\n
                  reader.readAsDataURL(event.target.files[0]);<\/p>\n
              });<\/p>\n
          <\/script><\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u4e94\u3001\u5904\u7406\u4e0e\u7ef4\u62a4\u7f16\u8f91\u5668\u72b6\u6001<\/h3>\n<\/p>\n
          \u5bf9\u4e8e\u7a0d\u5fae\u590d\u6742\u7684\u5bcc\u6587\u672c\u7f16\u8f91\u5668\uff0c\u9700\u8981\u7ef4\u62a4\u548c\u4fdd\u5b58\u7f16\u8f91\u5668\u7684\u72b6\u6001<\/strong>\uff0c\u4ee5\u4fbf\u4e8e\u5b9e\u73b0\u64a4\u9500\/\u91cd\u505a\u64cd\u4f5c\u6216\u8005\u4fdd\u6301\u4f1a\u8bdd\u6301\u4e45\u6027\u3002<\/p>\n<\/p>\n
          \u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
            \n
          1. \u5229\u7528JavaScript\u7684localStorage<\/code>\u6216sessionStorage<\/code>\u6765\u4fdd\u5b58\u7f16\u8f91\u5668\u7684\u72b6\u6001\u3002<\/li>\n
          2. \u4e3a\u64a4\u9500\/\u91cd\u505a\u64cd\u4f5c\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u72b6\u6001\u5386\u53f2\u5806\u6808\u3002<\/li>\n<\/ol>\n
            \u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
            let historyStack = [];<\/p>\n
            let stackIndex = -1;<\/p>\n
            function saveState(content) {<\/p>\n
                historyStack.push(content);<\/p>\n
                stackIndex++;<\/p>\n
            }<\/p>\n
            function undo() {<\/p>\n
                if (stackIndex > 0) {<\/p>\n
                    stackIndex--;<\/p>\n
                    document.getElementById('editor').innerHTML = historyStack[stackIndex];<\/p>\n
                }<\/p>\n
            }<\/p>\n
            function redo() {<\/p>\n
                if (stackIndex < historyStack.length - 1) {<\/p>\n
                    stackIndex++;<\/p>\n
                    document.getElementById('editor').innerHTML = historyStack[stackIndex];<\/p>\n
                }<\/p>\n
            }<\/p>\n
            <\/code><\/pre>\n<\/p>\n
            \u516d\u3001\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u7684\u5b89\u5168\u6027<\/h3>\n<\/p>\n
            \u5b89\u5168\u662f\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u8bbe\u8ba1\u65f6\u4e0d\u53ef\u5ffd\u89c6\u7684\u65b9\u9762\u3002\u7f16\u8f91\u5668\u5bb9\u6613\u53d7\u5230XSS\u653b\u51fb\uff0c\u5f00\u53d1\u8005\u5fc5\u987b\u786e\u4fdd\u901a\u8fc7\u7f16\u8f91\u5668\u63d2\u5165\u7684\u5185\u5bb9\u662f\u5b89\u5168\u7684\u3002<\/p>\n<\/p>\n
            \u8fd9\u9700\u8981\uff1a<\/p>\n<\/p>\n
              \n
            1. \u5728\u5185\u5bb9\u63d0\u4ea4\u5230\u670d\u52a1\u5668\u4e4b\u524d\uff0c\u8fdb\u884c\u6e05\u6d01\u5904\u7406\uff0c\u53bb\u9664\u53ef\u80fd\u6267\u884c\u7684\u811a\u672c\u3002<\/li>\n
            2. \u4f7f\u7528\u5e93\uff0c\u5982DOMPurify\uff0c\u81ea\u52a8\u6e05\u7406HTML\u5185\u5bb9\u3002<\/li>\n<\/ol>\n
              \u4e03\u3001\u4f18\u5316\u7528\u6237\u4f53\u9a8c<\/h3>\n<\/p>\n
              \u521b\u5efa\u7528\u6237\u53cb\u597d\u7684\u7f16\u8f91\u5668\uff0c\u9700\u8981\u8003\u8651\u6613\u7528\u6027\u548c\u754c\u9762\u8bbe\u8ba1\u3002\u5de5\u5177\u680f\u7684\u5e03\u5c40\u3001\u6309\u94ae\u7684\u6392\u5217\u53ca\u5feb\u6377\u952e\u7684\u652f\u6301<\/strong>\u7b49\u90fd\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n
              \u4e3a\u6b64\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\uff1a<\/p>\n<\/p>\n
                \n
              1. \u8bbe\u8ba1\u76f4\u89c2\u7684\u5de5\u5177\u680f\u548c\u83dc\u5355\u3002<\/li>\n
              2. \u4e3a\u5e38\u7528\u64cd\u4f5c\u6dfb\u52a0\u5feb\u6377\u952e\u548c\u5de5\u5177\u680f\u63d0\u793a\u3002<\/li>\n<\/ol>\n
                \u516b\u3001\u8de8\u6d4f\u89c8\u5668\u517c\u5bb9\u6027<\/h3>\n<\/p>\n
                \u8de8\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u662fWeb\u5f00\u53d1\u7684\u5e38\u89c1\u96be\u9898\u3002\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u5bf9contenteditable<\/code>\u548cexecCommand<\/code>\u7684\u652f\u6301\u6709\u7ec6\u5fae\u5dee\u522b\u3002<\/p>\n<\/p>\n
                \u9700\u91c7\u53d6\u63aa\u65bd\u4ee5\u786e\u4fdd\uff1a<\/p>\n<\/p>\n
                  \n
                1. \u7f16\u8f91\u5668\u5728\u4e3b\u8981\u6d4f\u89c8\u5668\u4e0a\u7684\u57fa\u672c\u529f\u80fd\u76f8\u4f3c\u3002<\/li>\n
                2. \u901a\u8fc7\u7279\u6027\u68c0\u6d4b\u8fdb\u884c\u517c\u5bb9\u6027\u5904\u7406\u3002<\/li>\n<\/ol>\n
                  \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                  \u5bcc\u6587\u672c\u7f16\u8f91\u5668\u600e\u4e48\u5728 JavaScript \u4e2d\u5b9e\u73b0\uff1f<\/strong><\/p>\n
                  \u5bcc\u6587\u672c\u7f16\u8f91\u5668\u5728 JavaScript \u4e2d\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 HTML \u548c CSS \u6765\u5b9e\u73b0\u3002\u53ef\u4ee5\u4f7f\u7528 contenteditable \u5c5e\u6027\u4f7f\u4e00\u4e2a\u5143\u7d20\u53d8\u4e3a\u53ef\u7f16\u8f91\u7684\u533a\u57df\uff0c\u7136\u540e\u5229\u7528 document.execCommand() \u65b9\u6cd5\u6765\u6267\u884c\u7f16\u8f91\u64cd\u4f5c\uff0c\u6bd4\u5982\u63d2\u5165\u6587\u672c\u3001\u4fee\u6539\u5b57\u4f53\u6837\u5f0f\u3001\u63d2\u5165\u56fe\u7247\u7b49\u3002<\/p>\n
                  \u5982\u4f55\u4f7f\u7528 JavaScript \u521b\u5efa\u4e00\u4e2a\u5bcc\u6587\u672c\u7f16\u8f91\u5668\uff1f<\/strong><\/p>\n
                  \u8981\u521b\u5efa\u4e00\u4e2a\u5bcc\u6587\u672c\u7f16\u8f91\u5668\uff0c\u9996\u5148\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5305\u542b contenteditable \u5c5e\u6027\u7684 HTML \u5143\u7d20\uff0c\u6bd4\u5982 <\/p>\n
                   \u6216