请教我使用加网jsapi接口,在微网站里无法执行$.ajax

我使用加网js的api接口 中的自定义函数 无法执行$.ajax   sucess 或 error 都不输出

<script>function ccd(evt){        var url3 = "http://xxxxx/index.php?g=Wap&m=Card&a=ajax_fenxiang3";        // var url2 = "{lanrain::U('Card/ajax_fenxiang',array('token'=>$_GET['token'],'wecha_id'=>$_GET['wecha_id']))}";                 $.ajax({                         type: "GET",                        url: url3,                          contentType: "application/json; charset=utf-8",                         dataType: "json",                       success: function (result) {                           alert(111);                          },                          error: function (msg) {                               alert(333);                       }              })             }   var jiathis_config = {    boldNum:0,    siteNum:7,    showClose:false,    sm:"t163,kaixin001,renren,douban,tsina,tqq,tsohu",    imageUrl:"http://v2.jiathis.com/code/images/r5.gif",    imageWidth:26,    marginTop:150,    url:"http://www.jiathis.com",    title:"自定义TITLE #微博话题#",    summary:"分享的文本摘要",    pic:"自定义分享的图片连接地址",    data_track_clickback:true,    evt: {"share":"ccd"}}</script>

<!-- JiaThis Button BEGIN --><div class="jiathis_style">    <a class="jiathis_button_qzone"></a>    <a class="jiathis_button_tsina"></a>    <a class="jiathis_button_tqq"></a>  <a class="jiathis_button_weixin"></a>   <a class="jiathis_button_renren"></a>   <a class="jiathis_button_xiaoyou"></a>  <a href="http://www.jiathis.com/share" class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank"></a> <a class="jiathis_counter_style"></a><script type="text/javascript" src="http://v3.jiathis.com/code/jia.js" charset="utf-8"></script></div>

回复讨论(解决方案)

去掉
contentType: "application/json; charset=utf-8",

谢谢斑竹的热心帮忙