import { Component } from '@angular/core'; import { Config, ionicBootstrap, NavController, NavParams, Platform } from 'ionic-angular'; var PAGE_NUM = 2; @Component({ templateUrl: 'main.html' }) export class ApiDemoPage { constructor(public nav: NavController) {} push() { this.nav.push(PushPage); } } @Component({ templateUrl: "page.html" }) export class PushPage { pageNum = PAGE_NUM; constructor(private nav: NavController) {} push() { PAGE_NUM++; this.nav.push(PushPage); } pop() { if (PAGE_NUM > 2) { PAGE_NUM--; } this.nav.pop(); } } @Component({ template: '' }) class ApiDemoApp { root = ApiDemoPage; } ionicBootstrap(ApiDemoApp);