语法简介
$.ajax({`
type:` `"post"``,` `//数据提交方式（post/get）`
url:` `"[http://xxx/test/demo.php](http://xxx/test/demo.php)"``, //提交到的url`
data: {username:username,password:password},``//提交的数据`
dataType:` `"json"``,` `//返回的数据类型格式`
success:` `function``(msg){`
...``//返回成功的回调函数`
},`
error:``function``(msg){`
...``//返回失败的回调函数`
}`
});`
<!--?php
$username=$_POST['username']; //接收以post方式提交来的username数据
$password=$_POST['password'];
?>
示例详解
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ajaxTest</title>
</head>
<body>
<input type="text" id="username">
<input type="text" id="password">
<button id="sub">查询</button>
<span id="text"></span><!-- 用以显示返回来的数据，只刷新这部分地方 -->
</body>
<script src="//cdn.bootcss.com/jquery/3.0.0-alpha1/jquery.min.js"></script>
</html>
`<``script``>`
`$(function(){`
`$('#sub').click(function(){`
`var username=$('#username').val();`
`var password=$('#password').val();`
`$.ajax({`
`type: "post",`
`url: "[http://xxx/test/demo.php](http://xxx/test/demo.php)",`
`data: {username:username,password:password}, //提交到demo.php的数据`
`dataType: "json", //回调函数接收数据的数据格式`
`success: function(msg){`
`$('#text').empty(); //清空Text里面的所有内容`
`var data='';`
`if(msg!=''){`
`data = eval("("+msg+")"); //将返回的json数据进行解析，并赋给data`
`}`
`$('#text').html("用户名为：" + data.username + ",密码为：" + data.password); //在#text中输出`
`console.log(data); //控制台输出`
`},`
`error:function(msg){`
`console.log(msg);`
`}`
`});`
`});`
`})`
`</``script``>`
<!--?php
header('Content-type:text/json;charset=utf-8');
$username=$_POST['username'];
$password=$_POST['password'];
$data='{username:"' . $username . '",password:"' . $password .'"}';//组合成json格式数据
echo json_encode($data);//输出json数据
?>
网友评论