请帮我看一下,xml做什么用处????????????????????
<script>
function wllogin()
{
if(Logins.leaguer.value.indexOf("'")!=-1||Logins.leaguer.value.indexOf("&")!=-1)
{
alert("请输入用户代码!")
Logins.leaguer.value=""
Logins.password.value=""
return
}
if(Logins.password.value.indexOf("'")!=-1|| Logins.password.value.indexOf("&")!=-1)
{
alert("请输入授权用户密码!")
Logins.password.value=""
return
}
if (Logins.leaguer.value =="" )
{
window.alert ("请输入用户代码!");
return;
}
if (Logins.password.value =="" )
{
window.alert ("请输入密码");
return;
}
Logins.pwd.value=Logins.password.value
Logins.password.value=""
var xmlDoc=new ActiveXObject("Microsoft.XMLDOM")
xmlDoc.loadXML("<Root><UserName>" + Logins.leaguer.value + "</UserName><Password>" + Logins.pwd.value + "</Password></Root>");
var xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
xmlHttp.Open("POST", "leaguer/wlLogin.asp", false);
xmlHttp.Send(xmlDoc);
if (xmlHttp.responseXML.selectSingleNode("Result").text=="yes")
window.open("WlQuery/WLGOODSQUERY/index.asp","_self")
else
window.alert(xmlHttp.responseXML.selectSingleNode("Result").text);
}
function keypress() {
if (window.event.keyCode==13)
wllogin()
}
</script>