<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<form>
<p>姓名：<input type="text" name="username"></p>
<p>爱好：<input type="checkbox" name="hobby[]" value="swiming">游泳
<input type="checkbox" name="hobby[]" value="reading">读书
<input type="checkbox" name="hobby[]" value="running">跑步
</p>
<p>描述：<textarea name="desc" cols="40" rows="5"></textarea></p>
<input type="button" value="提交">
</form>
<script>
$('input[type=button]').on('click',function(){
var username=$('input[type=text]').val();
var desc=$('textarea[name=desc]').val();
var hobby=decodeURIComponent($('input[type=checkbox]').serialize()); //这里就是关键，获取所有类型为type=checkbox的值，再用serialize()将序列化，创建URL编码文本字符串，再用decodeURIComponent转化。
$.ajaxSetup({
type:'GET',
url:'1.php',
dataType:'json',
data:{
'username':username,'hobby':hobby,'desc':desc},
success:function(msg){
console.log(msg.name+'-'+msg.hobby+'-'+msg.desc);
}
});
$.ajax();
});
</script>
</body>
</html>
下面是1.php的代码，获取表单的值再输出
<?php
$name=$_GET['username'];
$hobby=$_GET['hobby'];
$desc=$_GET['desc'];
$arr=['name'=>$name,'hobby'=>$hobby,'desc'=>$desc];
echo json_encode($arr);
?>