ajax登录实例——2018年4月9日 - 课程作业

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实例

<!DOCTYPE html>
<html lang="zh">
<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<meta http-equiv="X-UA-Compatible" content="ie=edge" />
	<title>Document</title>
	<style type="text/css">
		body{
			background-color: burlywood;
			font-family: "微软雅黑";
			padding: 0;
		}
		fieldset{
			width: 400px;
			margin: auto;
			text-align: center;
			color: white;
			line-height: 40px;
		}
		fieldset legend{
			text-align: left;
			font-size: 1.5em;
			color: deeppink;
			font-weight: bold;
		}
		fieldset #username,#password{
			width: 200px;
			height: 30px;
			border: none;
			background-color: #FF7F50;
			border-radius: 5px;
			font-size: 1.2em;
			color: #fff;
		}
		fieldset button{
			width: 270px;
			height: 30px;
			background-color: #6495ED;
			border: none;
			border-radius: 5px;
			color: #fff;
			font-size: 1.3em;
			font-family: "黑体";
			
		}
		fieldset button:hover{
			background-color: cadetblue;
			cursor: pointer;
			font-size: 1.5em;
		}
	</style>
</head>
<body>
	<fieldset id="login">
		<legend>会员登录</legend>
		<p>
			<label for="username">用户名：</label>
			<input type="text" name='username' id='username'>
		</p>
		<p>
			<label for="password">密    码：</label>
			<input type="password" name='password' id='password'>
		</p>
		<p>
			<button>登录</button>
		</p>
		<p>
			<h3 id='tips'></h3>
		</p>
	</fieldset>
</body>
</html>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
	
	
	$('button:first').click(function(){
		var username = $('#username').val()
		var pass = $('#password').val()
		if (username=='') {
			alert('账号不得为空！')
			$('#username').focus()
			return false
		}else if(pass==''){
			alert('密码不得为空！')
			$('#password').focus()
			return false
		}
		var posturl = '/check.php?m=login'
		var data = {
			'username':username,
			'password':pass
		}
		var success = function(res){
			if (res=='1') {
				$('#tips').text('登录成功')
				setTimeout(function(){
					location.href='/user.php'
				},2000)
			}else{
				$('#tips').text('登录失败,请重新输入')
				setTimeout(function(){
					$('#username').val('').focus()
					$('#password').val('')
					
				},2000)
			}
		}
		$.post(posturl,data,success)
	})
</script>

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