网页里不能直接添加分享按钮或链接，只能手动点击右上角的分享

<a href="javascript:void(0)" id="share">发送给好友</a>

<script type="text/javascript">

var readyFunc = function onBridgeReady() {

     

 

        document.querySelector('#share').addEventListener('click', function(e){

            WeixinJSBridge.invoke('sendAppMessage',{

                "img_url":"http://www.sample.com//img/template/lib/home-450300.jpg?v=2013-12-18-2?=2013-12-18-2",

                "img_width":"640",

                "img_height":"640",

                "link":"http://www.sample.com",

                "desc":'desc',

                "title":'title'

            },function(res){

                

                alert(res.err_msg);

     

           });

        });    

        

    }

    if (typeof WeixinJSBridge === "undefined") {

      document.addEventListener('WeixinJSBridgeReady', readyFunc, false);

    } else {

      readyFunc();

    }

    </script>

点击发送给好友后提示system:access_denied

只能手动点击右上角的分享才可以触发