点击输入框或文本域可实现编辑的JS代码_表单按钮特效

点击输入框或文本域可实现编辑，JS将自动判断是INPUT还是TEXTAREA，当出现编辑状态时你可以编辑修改文字，完成后点击其它处，此时JS将数据提交到指定程序进行保存，用好了这个技巧可有效改善你网站的用户操作体验。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>点击编辑</TITLE>
</HEAD>
<BODY>
<script type="text/javascript">
<!--
var _edit = 
{
 IN: function (obj, act, id) {
  var tag = obj.firstChild.tagName;

if (typeof(tag) != "undefined" && (tag == "INPUT" || tag == "TEXTAREA"))return;
  var org = obj.innerHTML;
  var orglen = org.replace(/[^\x00-\xff]/g,'**').length;
  if (obj.offsetHeight <= 22) {
  var val = window.ActiveXObject ? obj.innerText : obj.textContent;
  var txt = document.createElement("INPUT");
  txt.value = val;
  txt.style.background = "#FFC";
  txt.style.width = obj.offsetWidth + "px" ;
  obj.innerHTML = "";
  obj.appendChild(txt);
  txt.focus();
  txt.onblur = function(e){
obj.innerHTML = txt.value;
_edit.QUERY(act,txt.value);
return false;
  }
  return false;
  }else{
var mrc = obj.innerHTML;
var html = document.createElement('TEXTAREA');
html.style.width = obj.offsetWidth + "px";
html.style.height = obj.offsetHeight + "px";
obj.innerHTML = "";
html.value = mrc;
obj.appendChild(html);
html.focus();
html.onblur = function(e){
obj.innerHTML = html.value;
_edit.QUERY(act,obj.innerHTML);
}
return false;
  }

},
 QUERY: function (url,postData) {
var req = (window.XMLHttpRequest) ? new XMLHttpRequest() : (window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : false);
if (!req) alert("Unable to creat an XMLHttpRequest");
var method = (postData) ? "POST" : "GET";
req.open(method,url,true);
if (postData)req.setRequestHeader('Content-type','application/x-www-form-urlencoded');
req.onreadystatechange = function () {
if (req.readyState == 4) {
if(req.status == 200) {
var message = req.responseText;
if(message)alert(message);
}else{
alert("There was a problem with the request " + req.status);
}
}
}
req.send(postData);
 }
}

var editContent = _edit.IN;
// -->
</script>
</head>

<body>
<h2>Edit text</h2>
<div  style="background-color:#FFFFCC;width:160px;" onclick="_edit.IN(this,'index.html?act=edit',3)">INPUT单击可以编辑</div><br />
<div id="mrc" ondblclick="editContent(this,'index.html?act=edit',3)">模板无忧（mb5u.com）提供各类网页模板、视频教程、JavaScript/CSS特效代码以及常用软件下载等，做有质量的学习型源码下载站。</div>
</pre>
 </BODY>
</HTML>

所属频道：表单按钮特效/更新时间：2012-12-05

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