html页面：
<html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <script type="text/javascript" src="jquery-1.8.2.min.js"></script> <script type="text/javascript"> $(function(){ $("#send").click(function(){ var cont = $("input").serialize(); $.ajax({ url:‘ab.php‘, type:‘post‘, dataType:‘json‘, data:cont, success:function(data){ var str = data.username + data.age + data.job; $("#result").html(str); } }); }); }); </script> </head> <body> <div id="result">一会看显示结果</div> <form id="my" action="" method="post"> <p><span>姓名：</span><input type="text" name="username" /></p> <p><span>年龄：</span><input type="text" name="age" /></p> <p><span>工作：</span><input type="text" name="job" /></p> </form> <button id="send">提交</button> </body> </html>
php页面：
<?php
header("Content-type:text/html;charset=utf-8");
$username = $_POST[‘username‘];
$age = $_POST[‘age‘];
$job = $_POST[‘job‘];
$json_arr = array("username"=>$username,"age"=>$age,"job"=>$job);
$json_obj = json_encode($json_arr);
echo $json_obj;
?>
原文：http://www.cnblogs.com/hjxcode/p/6029781.html