代码：

wx.ready(function() {
          
          wx.checkJsApi({
            jsApiList: ["checkJsApi", 'onMenuShareAppMessage','onMenuShareTimeline',  'onMenuShareQQ','onMenuShareQZone','updateTimelineShareData', 'updateAppMessageShareData'],
            success: function(res) {}
          });
          wx.updateAppMessageShareData({
            title: titlen,
            desc: descn, // 分享描述
            link: encodeURI(linkurl), // 分享链接，该链接域名或路径必须与当前页面对应的公众号JS安全域名一致
            imgUrl: encodeURI(imgUrln), // 分享图标
            // type: 'link', // 默认为link
            // dataUrl: '', // 如果type是music或video，则要提供数据链接，默认为空
            success: function() {},
            cancel: function() {}
          });
          wx.updateTimelineShareData({
            title: titlen,
            link: encodeURI(linkurl),
            imgUrl: encodeURI(imgUrln),
            // type: 'link',
            success: function() {},
            cancel: function() {}
          });