import { Component } from '@angular/core';

@Component({
  selector: 'page-main',
  templateUrl: 'main.html'
})
export class MainPage {
  cancelMsg: string;

  constructor() {
    this.cancelMsg = "Close";
  }
}


import { Component  } from '@angular/core';
import { MainPage } from '../main/main';

@Component({
  templateUrl: 'page-tab.html',
  providers: [MainPage]
})
export class CalculatorPage{

  constructor(public mainPage: MainPage) {
    alert(mainPage.cancelMsg);
  }
}