<web-view src="{{newsUrl}}"  bindmessage="handleMessage" id="web-view"></web-view> 

sendCodeToVue(code) {

    // 将code发送回Vue页面

    const currentWebview = this.selectComponent('#web-view')

    webViewContext.postMessage({ code: code })

  },

this.selectComponent('#web-view')会报ReferenceError: webViewContext is not defined