如何使用JSONP下载客户端javascript对象?

2. 在客户端使用该对象,并最终有一个“下载我”链接
3. application/json

现在这是我的作品:

服务器端代码

<?php
$data = array('zero', 'one', 'two', 'testing the encoding');  
$json = json_encode($data);  
//$json = json_encode($_GET['']); //eventually I'll encode their data, but I'm testing
header("Content-type: application/json"); 
header('Content-Disposition: attachment; filename="backup.json"'); 
echo $_GET['callback'] . ' (' . $json . ');';
?>

$("#download").click(function(){
    var json = JSON.stringify(collection); //serializes their object
    $.ajax({
       type: "GET",
       url: "http://www.myURL.com/api.php?callback=?", //this is the above script
       dataType: "jsonp",
       contentType: 'jsonp',
       data: json,
       success: function(data){
           console.log( "Data Received: " + data[3] );
       }
    });
    return false;
});

现在当我参观 api.php download.json

 (["zero","one","two","testing the encoding"]);

当我点击 #download 要运行AJAX调用,它需要登录Firebug

Data Received: testing the encoding

这几乎是我所期望的。我正在接收JSON字符串并序列化它,这很好。我错过了两件事:

1. 当我在浏览器中访问页面时,我需要做什么才能获得相同的下载行为提示