Micro page open letter special place

1. To the background video autoplay need to call micro-channel interface

  IF ( browserCore === ' MicroMessenger ' ) is a front {// This is used to determine a Twitter browser kernel used 
      document.addEventListener ( " WeixinJSBridgeReady " , function () { 
        document.getElementById ( " videoID " ) .play (); 
      }, to false ); 
  }