javascriptappendChild,innerHTML,join性能比较代码_javascript技巧



代码如下:




//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{
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{
oDiv.innerHTML+=""+Text+"";
}
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{
MyArray.push(""+Text+"");
}
oDiv.innerHTML=MyArray.join(' ');
var Time1=new Date();
var EndTime=Time1.getTime();
document.getElementById('TbDate').value=EndTime-StartTime
}

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