代码如下
var xmlhttp=null;
function creatXMLHttp(){
try{
xmlHttp = new XMLHttpRequest();
}catche(e){
var msxmlhttp = new Array("Msxml2.XMLHTTP.6.0","Msxml2.XMLHTTP.5.0","Msxml2.XMLHTTP.4.0",
"Microsoft.XMLHTTP")
for(var i =0;i < msxmlhttp.length();i++){
try{
xmlHttp = new ActiveXObject(msxmlhttp.[i]) ;
if(xmlHttp!=null){break;}
}catch(e){}
}
}
if(xmlHttp==null){alert("浏览器不支持Ajax");}
}
function sendRequest(url,params,method,handler){
xmlHttp.onreadystatechange="handler";//指定处理函数
if(mehod=="GET"){
xmlHttp.open(method,url+'?'+params ,true)
xmlHttp.send(null);
}
if(method="POST"){
xmlHttp.open(mehod,url,true) ;
xmlHttp.setRequestHeader("Content-type","application/x-www-form-urlencoded")
xmlHttp.send(params);
}
}
//
function formCheck(){ var url ="logcheck"; var userName=document.getElementById("luserName").value; var PSD=document.getElementById("lpsd").value; var yanzheng=document.getElementById("lyanzheng").value; var params="userName="+userName+"&psd="+psd+"&yanzheng="+yanzheng; sendRequest(url,params,'POST',showResult);}function showResult(){if(xmlHttp.readyState==4&&xmlHttp.status==200){ var info =xmlHttp.responseText; if(!(info==1)){ alert(info); } else{ window.location.href="/studentlogin/admin/home.jsp"; }}
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