<!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=utf-8" />
<title>无标题文档</title>
<script>
function c(id,n,val){
var tb = document.getElementById(id),
r = tb.rows;
for(var i=0,j=r.length;i<j;i++){
r[i].cells[n].innerHTML = val;
}
}
</script>
</head>
<body>
<table id="tb" width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td width="19%"> </td>
<td width="24%">fdsfds</td>
<td width="17%"> </td>
<td width="13%"> </td>
<td width="9%"> </td>
<td width="18%"> </td>
</tr>
<tr>
<td> </td>
<td>fsdf</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td>sfd</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
<input type="button" value="点击改变" onclick="c('tb',1,'新的值')" />
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>无标题文档</title>
<script>
function c(id){
var objthis=this;
this.d=document.getElementsByTagName("td");
for(var i=0;i<this.d.length;i++){
this.d[i].onclick=function(){objthis.f(this);}
}
}
c.prototype.f=function(a){
w=a.offsetWidth;
h=a.offsetHeight;
s=a.innerHTML;
a.innerHTML="<input type='text' value='"+s+"' style='font-size:14px;width:"+w+"px;height:"+h+"px;border:0px solid red;background:#dddddd'>";
a.onclick=null;
}
</script>
</head>
<body>
<table id="tb" width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td width="19%"> </td>
<td width="24%">fdsfds</td>
<td width="17%"> </td>
<td width="13%"> </td>
<td width="9%"> </td>
<td width="18%"> </td>
</tr>
<tr>
<td> </td>
<td>fsdf</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td>sfd</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
<script type="text/javascript">var fdf=new c("td")</script>
</body>
</html>
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