** import { Component } from '@angular/core';**
** import { NavController, DateTime,NavParams } from 'ionic-angular';**
** import { IfStmt } from '@angular/compiler';**
** import { DatePipe, DOCUMENT, getLocaleMonthNames } from '@angular/common';**
** import { daysInMonth, parseDate } from 'ionic-angular/util/datetime-util';**
** import { toBase64String } from '@angular/compiler/src/output/source_map';**
** import { Console } from '@angular/core/src/console';**
** @Component({**
** selector: 'page-about',**
** templateUrl: 'about.html'**
** })**
** export class AboutPage {**
** datef;**
** datett;**
** dated1**
** dated2;**
** timeDiff;**
** typeOfDateYear;**
** typeOfDateMonth;**
** constructor(public navCtrl: NavController) {**
** }**
** performFunction(type){**
** var d1 = parseFloat(this.dated1); **
** var d2 = parseFloat(this.dated2); **
** var f = parseInt (this.datef);**
** var tt = parseInt (this.datett);**
** console.log(type);**
** if(type =='a'){**
** this.typeOfDateYear = tt - f **
** this.typeOfDateMonth = this.typeOfDateYear / (24* 3600* 1000)**
** }**
** }**
** }**
type or paste code here