ionic-framework/demos/popup/index.ts

import {App, Page, IonicApp, Config, Platform} from 'ionic/ionic';
import {Popup} from 'ionic/ionic';

@App({
  templateUrl: 'app.html'
})
class ApiDemoApp {

  constructor() {
    this.rootPage = InitialPage;
  }
}

@Page({
  templateUrl: 'main.html'
})
export class InitialPage {
  constructor(popup: Popup) {
    this.popup = popup;
    this.confirmOpen = false;
    this.confirmResult = '';
  }

  doAlert() {
    this.popup.alert({
        title: "New Friend!",
        template: "Your friend, Obi wan Kenobi, just accepted your friend request!",
        cssClass: 'my-alert'
    });
  }

  doPrompt() {
    this.popup.prompt({
      title: "New Album",
      template: "Enter a name for this new album you're so keen on adding",
      inputPlaceholder: "Title",
      okText: "Save"
    });
  }

  doConfirm() {
    this.confirmOpen = true;
    this.popup.confirm({
        title: "Use this lightsaber?",
        subTitle: "You can't exchange lightsabers",
        template: "Do you agree to use this lightsaber to do good across the intergalactic galaxy?",
        cancelText: "Disagree",
        okText: "Agree"
    });  
  }

}