前台js改变Session的值(用ajax实现)

首先，html代码：

<div style="display:none;"><iframe id="compareIframe" src=""></iframe></div>

js代码：

var compareContent=”你要改变的值"; 
if (compareContent != "") { 
document.getElementById("compareIframe").src = "ajax/changeSession.aspx?compareInfo=" +compareContent; 
} 
ajax: 
changeSession.aspx.cs 
protected void Page_Load(object sender, EventArgs e) 
{ 
Session["compare"] = Request.QueryString["compareInfo"]; 
} 
//end 
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