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[AjaxMethod]
Public DataTable ReadDatabase()
{
.......//这个不用教吧!
}
function use()
{
if(//跳出循环的条件)
{
var t=ReadDatabase();
//do samething width t;
clearTimeout(a)
}
var a= settimeout(use,1000);
}
function getAjax()
{
var oHttpReq = null;
if(window.ActiveXObject)
oHttpReq = new ActiveXObject("MSXML2.XMLHTTP");
else if(window.createRequest)
oHttpReq = window.createRequest();
else
oHttpReq = new XMLHttpRequest();
return oHttpReq;
}
function getData()
{
var req = getAjax();
req.open("GET", "getdata.aspx?get=1", true);
req.onreadystatechange = function(){
if(req.readyState==4){
document.getElementById("div1").innerHTML = req.responseText;
}
};
req.send(null);
}
setInterval(getData(),3000);