自己修改的Ajax注册和登录验证

function getXMLHTTPRequest()
{
var xRequest=null;
if (window.XMLHttpRequest)
{
xRequest=new XMLHttpRequest();
}
else if (typeof ActiveXObject != "undefined")
{
xRequest=new ActiveXObject("Microsoft.XMLHTTP");
}
return xRequest;
}
function Ajax(url)
{
AjaxObj = getXMLHTTPRequest();
AjaxObj.onreadystatechange = processRequest;
AjaxObj.open("get",url,true);
AjaxObj.setRequestHeader('Content-type','application/x-www-form-urlencoded');
AjaxObj.send(null);

}
function processRequest()
{
if(AjaxObj.readyState == 4)
{
if(AjaxObj.status == 200)
{
if(AjaxObj.responseText != "")
{
document.getElementById(reObj).innerHTML="";
document.getElementById(reObj).innerHTML=AjaxObj.responseText;
}
}
else
{
alert("您所请求的页面有异常。")
}
}
else
{
//document.getElementById(reObj).innerHTML="Loading......";
}
}

$(document).ready(function(){ $("#username").blur(function(){ var name=$("#username").val(); Ajax('reg.PHP?name='+name); reObj="check_user"; }); $("#email").blur(function(){ var mail=$("#email").val(); Ajax('reg.PHP?mail='+mail); reObj="check_mail"; }); $("#code").blur(function(){ var code=$("#code").val(); Ajax('reg.PHP?code='+code); reObj="check_code"; //reObj参数是回调函数中使用的参数 }); });

原文地址：https://www.jb51.cc/ajax/165542.html