本文和大家重点讨论一下用Javascript实现div可编辑的常见方法，这里主要有两种，希望本文的介绍对你的学习有所帮助。
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用Javascript实现div可编辑的常见方法
功能：实现网页内容的即时编辑，增加页面的可用性、交互性。
◆方法一：直接通过textarea标签实现，请运行下边代码：
- >
NewDocument TITLE> </li> <li><METANAMEMETANAME="Generator"CONTENT="EditPlus"> </li> <li><METANAMEMETANAME="Author"CONTENT=""> </li> <li><METANAMEMETANAME="Keywords"CONTENT=""> </li> <li><METANAMEMETANAME="Description"CONTENT=""> </li> <li><styletypestyletype="text/css"> </li> <li>#info{ </li> <li>font-size:12px; </li> <li>overflow:hidden; </li> <li>background-color:#ffffcc; </li> <li>color:black; </li> <li>padding-right:5px; </li> <li>padding-left:5px; </li> <li>font-family:courier; </li> <li>width:100%; </li> <li>letter-spacing:0; </li> <li>line-height:12px; </li> <li>border-style:none; </li> <li>} </li> <li> style> </li> <li> HEAD> </li> <li> </li> <li><BODY> </li> <li> </li> <li><dividdivid="sdf"style="width:400px;"> </li> <li><textareaidtextareaid="info"onblur="saveInfo()"onmouseout="saveInfo()"</li> <li>onkeyup="setRows()"> textarea> </li> <li> div> </li> <li><scriptlanguagescriptlanguage="JavaScript"> </li> <li>functionsaveInfo(){ </li> <li>vartext=document.getElementById("info").value; </li> <li>//再用ajax向数据库中更新当前修改内容 </li> <li>} </li> <li>functionsetCols(){ </li> <li>vartextarea=document.getElementById("info"); </li> <li>textarea.setAttribute("cols",Math.floor(textarea.clientWidth/7)); </li> <li>setRows(); </li> <li>} </li> <li>functionsetRows(){ </li> <li>vartextarea=document.getElementById("info"); </li> <li>varcols=textarea.cols; </li> <li>varstr=textarea.value; </li> <li>strstr=str.replace(/\r\n?/,"\n"); </li> <li>varlines=2; </li> <li>varchars=0; </li> <li>for(i=0;i<str.length;i++){ </li> <li>varc=str.charAt(i); </li> <li>chars++; </li> <li>if(c=="\n"||chars==cols){ </li> <li>lines++; </li> <li>chars=0; </li> <li>} </li> <li>} </li> <li>textarea.setAttribute("rows",lines); </li> <li>textarea.style.height=lines*12+"px"; </li> <li>} </li> <li>functionsetDefault(){ </li> <li>vartextarea=document.getElementById("info"); </li> <li>textarea.value="单击这里进行编辑"; </li> <li>} </li> <li>setDefault(); </li> <li>setCols(); </li> <li> script> </li> <li> BODY> </li> <li> HTML> </li> <li> </li> </ol></pre><p> [Ctrl+A全选注:如需引入外部Js需刷新才能执行]</p><p>思路：将textarea通过CSS样式设计成让用户感觉不像是textarea的样子，通过onblur、oumouseout等属性进行ajax保存用户数据。#p#</p><p>◆方法二：通过document.createElement的方法向页面增加input来实现。请运行下边代码： </p><ol> <li> </li> <li><HTML> </li> <li><HEAD> </li> <li><TITLE>NewDocument TITLE> </li> <li><METANAMEMETANAME="Generator"CONTENT="EditPlus"> </li> <li><METANAMEMETANAME="Author"CONTENT=""> </li> <li><METANAMEMETANAME="Keywords"CONTENT=""> </li> <li><METANAMEMETANAME="Description"CONTENT=""> </li> <li> HEAD> </li> <li> </li> <li><BODY> </li> <li><dividdivid="gtest"> </li> <li>点击这里就可以编辑 </li> <li> div> </li> <li><SCRIPTLANGUAGESCRIPTLANGUAGE="JavaScript"> </li> </ol> <p> </p><p>[Ctrl+A全选注:如需引入外部Js需刷新才能执行]</p><p>思路：</p><p>1、当用户鼠标经过可编辑区域时，用背景色等方式提醒用户该区域可编辑。</p><p>2、当用户鼠标点击该区域时，也就是onclick事件时，先将原来的内容清掉，将临时创建出来一个输入框和一个输入按扭。</p><p>3、用户修改完后，点击“保存”按扭时通过ajax向数据库中写入新的数据。</p><p>PS：第二个方法的代码还有点问题，有空再来调试一下。</p> <br> 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