为什么在第一次点击default.aspx页面上的temp和temp2链接时,Session都能够赋值,第二次点击temp或temp2后就不赋值了,一直保持在第2次点击其个链接时的状态。
default.aspx
<html>
<head>
<script type="text/javascript">
function sessionpage(index) {
var urltxt = "session.aspx?num=" + index;
objHTTP = new ActiveXObject("Microsoft.XMLHTTP");
objHTTP.open("get", urltxt, true);
objHTTP.send(); }
function position(i) {
var id = i.toString();
var target = document.getElementById("position");
var str = ' 您当前所在的位置:首页->';
switch (id) {
case "23":
sessionpage('temp.aspx');
break;
case "24":
sessionpage('temp2.aspx');
break;
}
}
</script>
</head>
<body>
<a href="temp.aspx" onclick="position(23);" target="iframe2">temp</a>
<a href="temp2.aspx" onclick="position(24);" target="iframe2">temp2</a> </body></html>session.aspx.cs:
protected void Page_Load(object sender, EventArgs e)
{
Session["page"] = Request.QueryString["num"].Trim();
}
default.aspx
<html>
<head>
<script type="text/javascript">
function sessionpage(index) {
var urltxt = "session.aspx?num=" + index;
objHTTP = new ActiveXObject("Microsoft.XMLHTTP");
objHTTP.open("get", urltxt, true);
objHTTP.send(); }
function position(i) {
var id = i.toString();
var target = document.getElementById("position");
var str = ' 您当前所在的位置:首页->';
switch (id) {
case "23":
sessionpage('temp.aspx');
break;
case "24":
sessionpage('temp2.aspx');
break;
}
}
</script>
</head>
<body>
<a href="temp.aspx" onclick="position(23);" target="iframe2">temp</a>
<a href="temp2.aspx" onclick="position(24);" target="iframe2">temp2</a> </body></html>session.aspx.cs:
protected void Page_Load(object sender, EventArgs e)
{
Session["page"] = Request.QueryString["num"].Trim();
}
你可以禁止缓存
var urltxt = "session.aspx?t="+Date.parse(new Date())+"&num=" + index;
var urltxt = "session.aspx?num=" + index+"&"Math.random()
这样加个时间变量每次就会指向不同url