jsonp php 实现跨域加载

php 端: demo.php

<?php
    $result =array(&#39;content&#39;=>$_GET[&#39;content&#39;]);
    function jsonp($result){
        return $_GET[&#39;callback&#39;] . &#39;(&#39; . urldecode(json_encode($result)) . &#39;)&#39;;
    }
    echo jsonp($result);
?>

客户端：demo.js

<script>
       $.ajax({
                           url      : &#39;http://127.0.0.1/demo.php&#39;,
                           data     :{&#39;content&#39;:&#39;this is a test&#39;},
                           dataType : &#39;jsonp&#39;,
                           jsonp    : &#39;callback&#39;,
                           success  : function(res) {
                                      console.log(res);       
                           }
       });
</script>