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ajax表单处理-2019年10月30日
渊的博客
Original
656 people have browsed it

1、form.html

实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <title>Ajax</title>
    <script type="text/javascript" src="jquery-3.4.1.min.js"></script>
</head>
    <style>
        div{margin:10px;text-align: center;}
    </style>
</head>
<body>
<form method="post" action="./ajax.php">
    <div style="text-align: center;">
        <label for="">用户名：</label>
        <input type="text" name="username" />
    </div>
    <div style="text-align: center;">
        <label for="">密码：</label>
        <input type="password" name="pwd" />
    </div>
    <div style="text-align: center;">
        <label for="">验证码</label>
        <input type="text" name="vericode" />
    </div>
    <div>
        <button type="button" onclick="save()">提交</button>
    </div>
</form>
<script type="text/javascript">
    function save(){
        var username=$.trim($('input[name="username"]').val());
        var pwd=$.trim($('input[name="pwd"]').val());
        var vericode=$.trim($('input[name="vericode"]').val());

        if(username==''){
            alert('请输入用户名');
            return;
        }
        if(pwd==''){
            alert('请输入密码');
            return;
        }
        if(vericode==''){
            alert('请输入验证码');
            return;
        }
        $.post('./ajax.php',{username:username,pwd:pwd,vericode:vericode},function(data){
            if(data.code>0){
                alert(data.msg);
                return;
            }
            alert(data.msg);
            window.location.href="http://www.php.cn";
        },'json');

    }
</script>
</body>
</html>

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ajax.php

实例

<?php
$username=$_POST['username'];
$pwd=$_POST['pwd'];
$verify=$_POST['vericode'];
if($verify!='123'){
    exit(json_encode(array('code'=>1,'msg'=>'验证码错误')));
}
if($username!="admin"){
    exit(json_encode(array('code'=>1,'msg'=>'用户名错误')));
    }
if($pwd!="123456"){
    exit(json_encode(array('code'=>1,'msg'=>'密码错误')));
   }
exit(json_encode(array('code'=>0,'msg'=>'登录成功')));

运行实例 »

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运行效果图

ajax.png

Correction status：qualified

Teacher's comments：写得很认真, 望坚持下去
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