用户登录验证例题用的ajax

1.登录页面

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="jquery-1.11.2.min.js"></script>
</head>

<body>
<div>用户名:<input type="text" id="uid" /></div>
<div>密&nbsp;码:<input type="password" id="pwd" /></div>
<div><input type="button" value="登录" id="btn" / ></div>
</body>
<script type="text/javascript">

    $("#btn").click(function(){
            var u=$("#uid").val();
            var p=$("#pwd").val();
            $.ajax({
                    url:"dlchuli.php",
                    data:{u:u,p:p},
                    type:"POST",
                    dataType:"TEXT",
                    success: function(data){
                            if(data.trim()=="ok"){
                                    window.location.href="main.php";
                                }else{
                                        alert("用户名或密码错误");
                                    }
                        }
                });
        });
</script>
</html>

2.处理页面

<?php
    $u=$_POST['u'];
    $p=$_POST['p'];
    include("./lei/AAA.class.php");
    $db=new AAA();
    $sql="select password from yuangong where username='{$u}'";
    $a=$db->StrQuery($sql);
    if($p!="" && $a==$p ){
            echo "ok";
        }else{
                echo "no";
            }
?>

 

posted on 2016-11-11 15:25  向前看！明天会更好！  阅读(111)  评论(0)  编辑  收藏  举报