wanmeiyizhan/unpackage/dist/dev/mp-weixin/pages/thirdParty/testPage.wxml

<view class="webview-box"><web-view class="webview vue-ref" src="{{src}}" data-ref="webview" data-event-opts="{{[['message',[['handleMessage',['$event']]]]]}}" bindmessage="__e"></web-view></view>