ionic3 瀏覽器端返回

首屏component.ts文件中使用
setupBrowserBackButtonBehavior() { // Register browser back button action(s)
    window.onpopstate = (evt) => { // Close menu if open // Close any active modals or overlays
      let activePortal = this.ionicApp._loadingPortal.getActive() ||
        this.ionicApp._modalPortal.getActive() ||
        this.ionicApp._toastPortal.getActive() ||
        this.ionicApp._overlayPortal.getActive(); if (activePortal) { activePortal.dismiss(); return; } // Navigate back
      if (this.navCtrl.canGoBack()) { this.app.goBack(); }else { WeixinJSBridge.call('closeWindow'); } }; // Fake browser history on each view enter
    this.app.viewDidEnter.subscribe((app) => { history.pushState(null, null, ""); }); }