<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<script type="text/javascript">
function login(){
//第一步：創建ajax對象
var ajax = new XMLHttpRequest();
//設置監聽函數
ajax.onreadystatechange = function(){
if (ajax.readyState==4 && ajax.status == 200){
var res = ajax.responseText;
alert(res);
}
}
//準備發送數據
ajax.open("get","./user.php?username=zhangsan&password=123456",true);
//發送數據
ajax.send(null);
}
login();
login();
login();
</script>
</head>
<body>
</body>
</html>user.php
<?php $username =$_GET['username']; $password =$_GET['password']; //處理數據 echo "註冊成功"; ?>