安卓和ios在app的跳转判断

let url =  ${environment()}/m/Exhibition/meeting?id=252 ;//线上 252 线下 2065
var u = navigator.userAgent, app = navigator.appVersion;
  var isAndroid = u.indexOf('APP_ANDROID') > -1; //g
  var isIOS = u.indexOf('APP_IOS') > -1; //ios终端
  // console.log('u',u)
  // console.log('isIOS',isIOS)
  if (isAndroid) {
    window.jsFromAndroid.goToWeb(url)

  }
  else if (isIOS) {
    window.webkit.messageHandlers.goToWeb.postMessage(url)
  }
  else{
    window.location.href = `${environment()}/m/Exhibition/meeting?id=252`;//线上  252 线下 2065s
  }