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function getServerTime()
{
      $.ajax({
       type: "POST",
       url: "Default2.aspx",
       data: "name=John&location=Boston",
       success: function(msg){
         $("#txtserver").text(msg);
       }
    });
    setTimeout('getServerTime()',500);
}
ǰ̨´úÂë2£ºÊ¹ÓÃPost·½·¨
function getServerTime()
{
    $.get("Default2.aspx?1",function(msg){
         $("#txtserver").text(msg);});
    setTimeout('getServerTime()',500);
}
ºǫ́Default2.aspx
 protected void Page_Load(object sender, EventArgs e)
    {
        Response.Write(DateTime.Now.ToLongTimeString());
    }


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var XmlHttp;
var PathUrl;
function createXmlHttp() {
    if (window.ActiveXObject) {
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if (window.XMLHttpRequest) {
      ......
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