app.component.ts

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

@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  public colors = ['blue', 'red', 'yellow'];
  public language = 'eng';

  public switchLanguage(language) {
    this.language = language;
  }
}