javascript appendChild,innerHTML,join性能比较代码
<!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>
<title>appendChild,innerHTML,join</title>
<script type="text/javascript"><!--
//使用appendChild()方法添加span标签
function AppendDiv()
{
var times=parseInt(document.getElementById('tbTimes').value);
var oDiv=document.getElementById('div1');
var Text=document.getElementById('tbText').value;
var Time=new Date();
var StartTime=Time.getTime();
for(var i=1;i<times;i++)
{
var span=document.createElement('span');
span.appendChild(document.createTextNode(Text));
oDiv.appendChild(span);
}
var Time1=new Date();
var EndTime=Time1.getTime();
document.getElementById('TbDate').value=EndTime-StartTime
}
//使用innerhtml()方法添加span标签
function InnerHTML()
{
var times=parseInt(document.getElementById('tbTimes').value);
var oDiv=document.getElementById('div1');
var Text=document.getElementById('tbText').value;
var Time=new Date();
var StartTime=Time.getTime();
for(var i=1;i<times;i++)
{
oDiv.innerHTML+="<span>"+Text+"</span>";
}
var Time1=new Date();
var EndTime=Time1.getTime();
document.getElementById('TbDate').value=EndTime-StartTime
}
//使用 Array中push添加span
function Join()
{
var times=parseInt(document.getElementById('tbTimes').value);
var oDiv=document.getElementById('div1');
var Text=document.getElementById('tbText').value;
var Time=new Date();
var StartTime=Time.getTime();
var MyArray=new Array();
for(var i=1;i<times;i++)
{
MyArray.push("<span>"+Text+"</span>");
}
oDiv.innerHTML=MyArray.join(' ');
var Time1=new Date();
var EndTime=Time1.getTime();
document.getElementById('TbDate').value=EndTime-StartTime
}
// --></script>
</head>
<body>
<input type="text" id="tbText" value="ws_hgo " /><br />
<input type="text" id="tbTimes" value="1000" /><br />
<input type="text" id="TbDate" /><br />
<input id="Button1" type="button" value="Append" onclick="AppendDiv();" />
<input id="Button2" type="button" value="innerHTML" onclick="InnerHTML();" />
<input id="Button3" type="button" value="Join" onclick="Join();" />
<div id="div1">
</div>
</body>
</html>