简单用JQ+PHP+Ajax实现表单验证用户名及密码

浏览数：31 / 时间：2015年06月09日

<html><head>
 <meta charset="utf-8">
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="a.js"></script>
<style type="text/css">
body { font:12px/1.6em "宋体" }
ul { list-style:none; }
li { margin-top:10px; }
</style>
</head>
<body>
<h3>会员登录</h3>
<div id="login">
<form method="post" action="login.php" id="form" name="form">
    <ul>
      <li>名字：<input type="text" name="user" id="user" size="16" maxlength="20"></li>
      <li>密码：<input type="password" name="pass" id="pass" size="16" maxlength="20"></li>
      <li>
        <input type="submit" style="border:0" />
      </li>
      <li id="confirm"></li>
    </ul>
</form>
</div>
</body></html>

$(document).ready(function(){
    $("#form").submit(function(){
        login();
        return false;
        });
});
function login(){
var user = $("#user").val();
var pass = $("#pass").val();
if (user == ""){
    $("#confirm").text("请输入登录用户名");
    $("#user").focus();
    return false;
}
if(pass == ""){
    $("#confirm").text("请输入登录密码");
    $("#pass").focus();
    return false;
}
$.ajax({
    type: "POST",
    url: "login.php",
    data: "id=" + user + "&p=" + pass,
    beforeSend: function(){
    $("confirm").text("登录中，请稍候");
    },
    success: function(msg){
    if(msg == "success"){
        $("#confirm").text("登录成功，欢迎" + user + "回来！正在进入你的空间");
    }else {
        $("#confirm").text("没有此用户或者密码不正确！");
    }
    }
});
}

<?php
$p = isset($_POST["p"]) ? $_POST["p"] : $_GET["p"];
$id = isset($_POST["id"]) ? $_POST["id"] : $_GET["id"];
if($id == "admin" && $p == "admin"){
    echo ‘success‘;
}
?>