JS实现微信里判断页面是否被分享成功的方法

var shareData = {  img_url: "",  img_width: 200,  img_height: 200,  link: '',  desc: '',  title: '',  appid: 0};document.addEventListener('WeixinJSBridgeReady', function onBridgeReady() {  // 发送给好友  WeixinJSBridge.on('menu:share:appmessage', function(argv){    shareFriend();  });  // 分享到朋友圈  WeixinJSBridge.on('menu:share:timeline', function(argv){    shareTimeline();  });}, false);function shareTimeline() {  WeixinJSBridge.invoke('shareTimeline', shareData, function(res) {    validateShare(res);    _report('timeline', res.err_msg);  });}function shareFriend() {  WeixinJSBridge.invoke('sendAppMessage', shareData, function(res) {    validateShare(res);    _report('send_msg', res.err_msg);  });}function validateShare(res) {  if(res.err_msg != 'send_app_msg:cancel' && res.err_msg != 'share_timeline:cancel') {  //分享完毕回调  }}