ajax + PHP 实现 JSONP 跨域请求

ajax

$.ajax({
        type: "get",
        data:{random:123},
        url: "http://www.98china.cn/kuayu.php",
        dataType: "jsonp",
        jsonp: "callback",
        success: function(data) {
            console.log("请求成功 : "+data);
        },
        error: function() {
            console.log("请求失败");
        }
    });

php

<?php

$data = $_GET['random'];
//echo $data; //非跨域请求
echo $_GET['callback'].'('.json_encode($data).')';    //跨域请求

?>