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javascript 就地编辑实现代码

　　本文标签：javascript,就地编辑

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>无标题文档</title> 
<script type="text/javascript"> 
// JavaScript Document 
var Deditor=( 
function(){ 
//private methods 
function addEvent(elem,type,handler){ 
if(!+"\v1"){//IE 
elem[type+handler.toString()]=handler; 
elem.attachEvent("on"+type,function(){ 
elem[type+handler.toString()](); });} 
else elem.addEventListener(type,handler,false); 
}//兼容事件绑定 
function fixEvent(e){ 
e.preventDefault=function(){return this.returnValue=false;}; 
e.stopPropagation=function(){return this.cancelBubble=true;}; 
return e; 
}//event兼容 
function createEditorFile(){ 
var span=document.createElement("span"); 
span.id="directEditorSpan"; 
var textFile=document.createElement("input"); 
textFile.type="text"; 
textFile.id="directEditorTextFile"; 
var okButton=document.createElement("input"); 
okButton.type="button"; 
okButton.value="save"; 
okButton.id="directEditorOkButton"; 
var cancelButton=document.createElement("input"); 
cancelButton.type="button"; 
cancelButton.value="cancel"; 
cancelButton.id="directEditorCancelButton"; 
span.appendChild(textFile); 
span.appendChild(okButton); 
span.appendChild(cancelButton); 
html=span; 
elemItems={span:span,textFile:textFile,okButton:okButton,cancelButton:cancelButton}; 
}// 文本编辑框 
function addEvents(){ 
for(var i=0;i<elems.length;i++){ 
addEvent(elems[i],"click",contextToFile); 
} 
var items=elemItems; 
addEvent(items.okButton,"click",save); 
addEvent(items.cancelButton,"click",cancel); 
addEvent(html,"click",function(evt){ 
evt=evt || window.event; 
if(!+"\v1") evt=fixEvent(evt); 
evt.stopPropagation(); 
}); 
}//事件添加 
function fileToContext(){ 
currentElem.removeChild(html); 
currentElem.innerHTML=currentContext; 
currentContext=null; 
currentElem=null; 
}//编辑转文本 
function contextToFile(evt){ 
if(currentElem) fileToContext(); 
evt=evt || window.event; 
currentElem=evt.srcElement || evt.target; 
currentContext=currentElem.innerHTML; 
elemItems["textFile"].value=currentContext; 
currentElem.innerHTML=""; 
currentElem.appendChild(html); 
html.style.display="block"; 
}//文本转编辑 
function save(){ 
var value=elemItems["textFile"].value; 
if(request("post",url,value)) 
currentElem.innerHTML=value; 
fileToContext(); 
}//保存结果 
function cancel(){ 
fileToContext(); 
}//放弃保存 
function addLinkCss(cssHref){ 
var link=document.createElement("link"); 
link.href=cssHref; 
link.type="text/css"; 
link.rel="stylesheet"; 
document.getElementsByTagName("head")[0].appendChild(link); 
} 
//private arguments 
var currentContext; 
var html; 
//var cssHref;//css样式 
var url;//AJAX请求 
var currentElem; 
var elems=[]; 
var elemItems={}; 
//public 
return function(elems_arg,saveUrl,linkHref){ 
//设置初始参数 
url=saveUrl; 
if(linkHref) addLinkCss(linkHref); 
if(elems_arg && elems_arg.constructor==Array&& elements.length>0) { 
elems=elems_arg; 
createEditorFile(); 
addEvents(); 
} 
//添加元素和事件 
this.thenEffect=function(elements){ 
if(elements.constructor==Array && elements.length>0) 
{elems=elements; 
createEditorFile(); 
addEvents();} 
}; 
this.setUrl=function(u){ 
url=u; 
}; 
this.setCssHref=function(href){ 
addLinkCss(href); 
};//添加公用方法 
}; 
}//ann function end 
)(); 
window.onload=function(){ 
var tds=document.getElementsByTagName("td"); 
var editors=[]; 
for(var i=0;i<tds.length; i++){ 
if((i+1)%2==0) 
editors.push(tds[i]); 
} 
var deditor=new Deditor(); 
deditor.thenEffect(editors); 
} 
</script> 
</head> 
<body> 
<style type="text/css"> 
#directEditorSpan input{ 
border:1px solid #ccc; 
background-color:#fff; 
color:#696969; 
float:left;} 
#info{ 
border-collapse:collapse; 
} 
#info td { 
border:1px solid #ccc; 
text-align:left; 
padding-left:10px; 
line-height:20px; 
width:100px; 
font-size:12px; 
} 
</style> 
<table id="info"> 
<tr><td>姓名</td><td>progresstudy</td></tr> 
<tr><td>年龄</td><td>22</td></tr> 
<tr><td>职业</td><td>学生</td></tr> 
</table> 
</script> 
</body> 
</html>

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