{"id":153937,"date":"2024-05-08T11:23:13","date_gmt":"2024-05-08T03:23:13","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/153937.html"},"modified":"2024-05-08T11:23:15","modified_gmt":"2024-05-08T03:23:15","slug":"%e6%80%8e%e4%b9%88%e7%bb%99javascript-div%e7%bc%96%e8%be%91%e6%a1%86%e5%85%89%e6%a0%87%e4%bd%8d%e7%bd%ae%e6%8f%92%e5%85%a5%e8%a1%a8%e6%83%85%e6%96%87%e5%ad%97%e7%ad%89","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/153937.html","title":{"rendered":"\u600e\u4e48\u7ed9javascript   div\u7f16\u8f91\u6846\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u8868\u60c5\u6587\u5b57\u7b49"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26211217\/0a301313-f7ad-4355-ba31-f236f531fa59-1.webp\" alt=\"\u600e\u4e48\u7ed9javascript   div\u7f16\u8f91\u6846\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u8868\u60c5\u6587\u5b57\u7b49\" \/><\/p>\n<p><p>\u5bf9\u4e8e\u5728JavaScript\u4e2d\u5411div\u7f16\u8f91\u6846\u7684\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u8868\u60c5\u3001\u6587\u5b57\u7b49\u5185\u5bb9\uff0c\u4e3b\u8981\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a<strong>\u7f16\u8f91\u5185\u5bb9\u7684\u83b7\u53d6\u4e0e\u8bbe\u7f6e\u3001\u83b7\u53d6\u5149\u6807\u4f4d\u7f6e\u3001\u5728\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u5185\u5bb9<\/strong>\u3002\u8fd9\u4e9b\u53ef\u4ee5\u901a\u8fc7document\u5bf9\u8c61\u7684selection\u548crange\u5bf9\u8c61\uff0c\u4ee5\u53caHTML5\u7684selectionStart\u5c5e\u6027\u6765\u5b8c\u6210\u3002<strong>\u7f16\u8f91\u5185\u5bb9\u7684\u83b7\u53d6\u4e0e\u8bbe\u7f6e<\/strong>\u662f\u6240\u6709\u64cd\u4f5c\u7684\u57fa\u7840\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684API\u6709execCommand\u3001contentEditable\u5c5e\u6027\u7b49\uff0c\u4f7fdiv\u5177\u5907\u53ef\u7f16\u8f91\u7684\u7279\u6027\uff0c\u540c\u65f6\u80fd\u591f\u901a\u8fc7JavaScript\u52a8\u6001\u4fee\u6539\u5176\u5185\u5bb9\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7fDIV\u53d8\u4e3a\u53ef\u4ee5\u7f16\u8f91<\/h3>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u8981\u8ba9div\u652f\u6301\u7f16\u8f91\u548c\u5185\u5bb9\u7684\u63d2\u5165\uff0c\u5fc5\u987b\u5c06div\u8bbe\u7f6e\u4e3a\u53ef\u7f16\u8f91\u72b6\u6001\u3002\u8fd9\u901a\u5e38\u901a\u8fc7HTML\u7684<code>contentEditable<\/code>\u5c5e\u6027\u6765\u5b9e\u73b0\u3002\u53ea\u8981\u8fd9\u4e2a\u5c5e\u6027\u88ab\u8bbe\u7f6e\u4e3atrue\uff0c\u90a3\u4e48\u8fd9\u4e2adiv\u5c31\u53ef\u4ee5\u50cf\u4e00\u4e2a\u6587\u672c\u7f16\u8f91\u5668\u4e00\u6837\u5de5\u4f5c\u4e86\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-html\">&lt;div id=&quot;editableDiv&quot; contentEditable=&quot;true&quot;&gt;\u8fd9\u91cc\u53ef\u4ee5\u7f16\u8f91&lt;\/div&gt;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u5728JavaScript\u4e2d\u63a7\u5236\u8fd9\u4e2a\u53ef\u7f16\u8f91div\uff0c\u4e3b\u8981\u662f\u901a\u8fc7\u64cd\u4f5cHTML DOM\u6765\u5b9e\u73b0\u5bf9\u5185\u5bb9\u7684\u83b7\u53d6\u548c\u8bbe\u7f6e\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7<code>document.getElementById()<\/code>\u83b7\u53d6\u5230\u8fd9\u4e2adiv\uff0c\u7136\u540e\u901a\u8fc7<code>innerHTML<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6216\u8bbe\u7f6e\u5176\u5185\u5bb9\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u83b7\u53d6\u5149\u6807\u5f53\u524d\u7684\u4f4d\u7f6e<\/h3>\n<\/p>\n<p><p>\u63d2\u5165\u5185\u5bb9\u524d\uff0c\u6211\u4eec\u9700\u8981\u786e\u5b9a\u5149\u6807\u5728\u53ef\u7f16\u8f91\u533a\u57df\u91cc\u7684\u786e\u5207\u4f4d\u7f6e\u3002\u5728\u8f83\u73b0\u4ee3\u7684\u6d4f\u89c8\u5668\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>document.getSelection()<\/code>\u6765\u83b7\u53d6\u5230selection\u5bf9\u8c61\uff0c\u5b83\u4ee3\u8868\u4e86\u7528\u6237\u9009\u5b9a\u7684\u6587\u672c\u8303\u56f4\u6216\u5149\u6807\u7684\u5f53\u524d\u4f4d\u7f6e\u3002\u82e5\u9700\u8981\u66f4\u7cbe\u7ec6\u5316\u7684\u63a7\u5236\uff0c\u6bd4\u5982\u5728\u7279\u5b9a\u7684\u4f4d\u7f6e\u63d2\u5165\u5185\u5bb9\uff0c\u6211\u4eec\u53ef\u80fd\u8fd8\u9700\u8981\u7528\u5230range\u5bf9\u8c61\u3002\u901a\u8fc7selection\u5bf9\u8c61\u7684getRangeAt\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u5230\u4e00\u4e2arange\u5bf9\u8c61\uff0c\u8868\u793a\u7528\u6237\u9009\u5b9a\u7684\u6587\u672c\u533a\u57df\u6216\u5149\u6807\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">function getCaretPosition(editableDiv) {<\/p>\n<p>    var caretPos = 0,<\/p>\n<p>        sel, range;<\/p>\n<p>    if (window.getSelection) {<\/p>\n<p>        sel = window.getSelection();<\/p>\n<p>        if (sel.rangeCount) {<\/p>\n<p>            range = sel.getRangeAt(0);<\/p>\n<p>            if (range.commonAncestorCont<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>ner.parentNode == editableDiv) {<\/p>\n<p>                caretPos = range.endOffset;<\/p>\n<p>            }<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>    return caretPos;<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u5728\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u5185\u5bb9<\/h3>\n<\/p>\n<p><p>\u786e\u5b9a\u4e86\u5149\u6807\u7684\u4f4d\u7f6e\u540e\uff0c\u4e0b\u4e00\u6b65\u5c31\u662f\u5728\u8fd9\u4e2a\u4f4d\u7f6e\u63d2\u5165\u6211\u4eec\u60f3\u8981\u7684\u5185\u5bb9\uff0c\u5982\u8868\u60c5\u6216\u6587\u672c\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u64cd\u4f5crange\u5bf9\u8c61\u5b9e\u73b0\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684range\uff0c\u8bbe\u5b9a\u5176\u63d2\u5165\u70b9\uff0c\u7136\u540e\u4f7f\u7528<code>document.createElement<\/code>\u6216\u8005<code>document.createTextNode<\/code>\u6765\u521b\u5efa\u5e26\u6709\u8868\u60c5\u56fe\u7247\u6216\u6587\u672c\u7684\u8282\u70b9\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">function insertAtCaretPosition(editableDiv, content) {<\/p>\n<p>    var sel, range;<\/p>\n<p>    if (window.getSelection) {<\/p>\n<p>        sel = window.getSelection();<\/p>\n<p>        if (sel.rangeCount) {<\/p>\n<p>            range = sel.getRangeAt(0);<\/p>\n<p>            range.deleteContents();<\/p>\n<p>            var el = document.createElement(&quot;div&quot;);<\/p>\n<p>            el.innerHTML = content;<\/p>\n<p>            var frag = document.createDocumentFragment(), node, lastNode;<\/p>\n<p>            while ((node = el.firstChild)) {<\/p>\n<p>                lastNode = frag.appendChild(node);<\/p>\n<p>            }<\/p>\n<p>            range.insertNode(frag);<\/p>\n<p>            if (lastNode) {<\/p>\n<p>                range = range.cloneRange();<\/p>\n<p>                range.setStartAfter(lastNode);<\/p>\n<p>                range.collapse(true);<\/p>\n<p>                sel.removeAllRanges();<\/p>\n<p>                sel.addRange(range);<\/p>\n<p>            }<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4ee5\u4e0a\u65b9\u6cd5\u5c06\u6307\u5b9a\u7684\u5185\u5bb9\u63d2\u5165\u5230\u5149\u6807\u6240\u5728\u7684\u4f4d\u7f6e\u3002\u65e0\u8bba\u662f\u63d2\u5165\u7684\u662f\u8868\u60c5\u8fd8\u662f\u6587\u672c\uff0c\u53ea\u8981\u5c06\u76f8\u5e94\u7684HTML\u5b57\u7b26\u4e32\u4f20\u9012\u7ed9<code>insertAtCaretPosition<\/code>\u51fd\u6570\u4f5c\u4e3a<code>content<\/code>\u53c2\u6570\u5373\u53ef\u5b9e\u73b0\u3002\u8fd9\u4e3a\u5f00\u53d1\u5bcc\u6587\u672c\u7f16\u8f91\u5668\u3001\u804a\u5929\u5e94\u7528\u7b49\u63d0\u4f9b\u4e86\u57fa\u7840\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5b9e\u4f8b\uff1a\u63d2\u5165emoji\u8868\u60c5<\/h3>\n<\/p>\n<p><p>\u5047\u8bbe\u73b0\u5728\u7684\u9700\u6c42\u662f\u5728\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u8868\u60c5\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u8868\u60c5\u96c6\u548c\u4e00\u4e2a\u51fd\u6570\u6765\u5904\u7406\u8868\u60c5\u7684\u70b9\u51fb\u4e8b\u4ef6\uff0c\u7136\u540e\u5c06\u9009\u4e2d\u7684\u8868\u60c5\u4ee3\u7801\u901a\u8fc7\u524d\u9762\u5b9a\u4e49\u7684<code>insertAtCaretPosition<\/code>\u51fd\u6570\u63d2\u5165\u5230\u7f16\u8f91\u533a\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u5b9a\u4e49\u8868\u60c5\u96c6\uff1a<\/strong> \u53ef\u4ee5\u662f\u4e00\u7ec4\u56fe\u7247\u6216\u8005\u4f7f\u7528emoji\u5b57\u7b26\u3002<\/li>\n<li><strong>\u5904\u7406\u70b9\u51fb\u4e8b\u4ef6\uff1a<\/strong> \u5f53\u7528\u6237\u70b9\u51fb\u67d0\u4e2a\u8868\u60c5\u65f6\uff0c\u83b7\u53d6\u8be5\u8868\u60c5\u7684\u8868\u793a\u5b57\u7b26\u6216\u56fe\u7247\u6807\u7b7e\uff0c\u5e76\u8c03\u7528\u63d2\u5165\u51fd\u6570\u3002<\/li>\n<\/ol>\n<p><p>\u8fd9\u4e0d\u4ec5\u4f7f\u7528\u6237\u80fd\u591f\u5728\u6587\u672c\u4e2d\u63d2\u5165\u8868\u60c5\uff0c\u8fd8\u80fd\u8fdb\u4e00\u6b65\u589e\u5f3a\u5e94\u7528\u7684\u4ea4\u4e92\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5411JavaScript\u4e2d\u7684div\u7f16\u8f91\u6846\u7684\u5149\u6807\u4f4d\u7f6e\u63d2\u5165\u8868\u60c5\u3001\u6587\u5b57\u7b49\u5185\u5bb9\u5e76\u4e0d\u590d\u6742\uff0c\u5173\u952e\u5728\u4e8e\u7406\u89e3\u548c\u8fd0\u7528\u6d4f\u89c8\u5668\u63d0\u4f9b\u7684DOM\u64cd\u4f5cAPI\u3002\u7406\u89e3\u7f16\u8f91\u5185\u5bb9\u7684\u83b7\u53d6\u4e0e\u8bbe\u7f6e\u3001\u5149\u6807\u4f4d\u7f6e\u7684\u83b7\u53d6\u3001\u4ee5\u53ca\u5982\u4f55\u5728\u8fd9\u4e9b\u4f4d\u7f6e\u63d2\u5165\u81ea\u5b9a\u4e49\u5185\u5bb9\uff0c\u662f\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u7684\u6838\u5fc3\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u5728JavaScript\u7684Div\u7f16\u8f91\u6846\u4e2d\u63d2\u5165\u8868\u60c5\u6587\u5b57\u6216\u8005\u5149\u6807\u4f4d\u7f6e\uff1f<\/strong><br \/>\n\u8981\u5728JavaScript\u7684Div\u7f16\u8f91\u6846\u4e2d\u63d2\u5165\u8868\u60c5\u6587\u5b57\u6216\u8005\u5c06\u5149\u6807\u5b9a\u4f4d\u5230\u6307\u5b9a\u4f4d\u7f6e\uff0c\u53ef\u4ee5\u4f7f\u7528DOM\uff08\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff09\u548cRange\uff08\u8303\u56f4\uff09\u6765\u5b9e\u73b0\u3002\u9996\u5148\uff0c\u53ef\u4ee5\u901a\u8fc7JavaScript\u83b7\u53d6\u5230Div\u5143\u7d20\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u6587\u672c\u8282\u70b9\u6765\u8868\u793a\u8868\u60c5\u6587\u5b57\u3002\u901a\u8fc7\u521b\u5efaRange\u5bf9\u8c61\u5e76\u5c06\u5176\u7126\u70b9\u79fb\u52a8\u5230\u7f16\u8f91\u6846\u7684\u6307\u5b9a\u4f4d\u7f6e\uff0c\u7136\u540e\u4f7f\u7528Range\u5bf9\u8c61\u7684insertNode()\u65b9\u6cd5\u5c06\u8868\u60c5\u6587\u5b57\u63d2\u5165\u5230\u5149\u6807\u4f4d\u7f6e\u3002<\/p>\n<p><strong>2. 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