ionic 2 動態載入iframe src – 不使用 DomSanitizer bypassSecurityTrustResourceUrl 的方式

12/3試了 ionic 2 動態載入iframe src但需要使用DomSanitizer bypassSecurityTrustResourceUrl 的方式，
今天試了另一種方式，範例如下:
1.cart.ts檔

import { Component, ViewChild, ElementRef } from '@angular/core';
import { IonicPage } from 'ionic-angular';
import { AlertController } from 'ionic-angular';
import { DomSanitizer } from '@angular/platform-browser';

@IonicPage()
@Component({
  selector: 'page-cart',
  templateUrl: 'cart.html'
})
export class CartPage {
    @ViewChild('ifr') ifr: ElementRef;
    loading: any;
    
  constructor(public alertCtrl: AlertController, private sanitizer: DomSanitizer) {
  }
  
  ionViewDidLoad() {
    this.ifr.nativeElement['src'] = 'https://warrant.xxxxx.com.tw/xxxxweb/';
    this.presentLoading();
  }
    
  presentLoading() {
    this.loading = this.alertCtrl.create({
          title: '下載中...',
          message: '測試訊息',
          buttons: [{
            text: 'Ignore',
            role: 'cancel'
          }, {
            text: 'View',
            handler: () => {
              //this.nav.push(DetailsPage, { message: '測試訊息-2' });
              console.log('測試訊息-2 handler');
            }
          }]
    });
    this.loading.present();
  }
  
  dismissLoading(){
    this.loading.dismiss();
  }
}

2.cart.html

<iframe data-tap-disabled="true" style="height:100%;width:100%;" src="https://www.xxx.com.tw/" #ifr/>