bindmessage 网页向小程序 postMessage 时，会在特定时机（小程序后退、组件销毁、分享）触发并收到消息。e.detail = { data }，data是多次 postMessage 的参数组成的数组

h5 jssdk

wx.miniProgram.postMessage({     data: {         title: window.document.title,         //desc: document.querySelector('meta[name=description]').content     } });

wxml

<web-view src="{{url}}" bindmessage="bindmessage" binderror="binderrorLoad" bindload="bindloading"></web-view>

wxjs

bindmessage(e) {//接收web-view传递的参数         this.setData({//存储状态             CurrentTitle : e.detail.data[0].title         })       }

onShareAppMessage: function(res){  return {             //res.webViewUrl这就是web-view中的网址             title: CurrentTitle,             path: res.webViewUrl,             imageUrl: shareImageUrl,             success: function() {                 // 转发成功                 wx.showToast({                     title: '分享成功~',                     icon: 'success',                     duration: 1800                 })             },             fail: function() {                  })             }         } }