angular-docs-cn/public/docs/_examples/user-input/ts/app/little-tour.component.ts

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

// #docregion little-tour
@Component({
  selector: 'little-tour',
  template: `
    <input #newHero
      (keyup.enter)="addHero(newHero.value)"
      (blur)="addHero(newHero.value); newHero.value='' ">

    <button (click)=addHero(newHero.value)>Add</button>

    <ul><li *ngFor="let hero of heroes">{{hero}}</li></ul>
  `
})
export class LittleTourComponent {
  heroes=['Windstorm', 'Bombasto', 'Magneta', 'Tornado'];
  addHero(newHero:string) {
    if (newHero) {
      this.heroes.push(newHero);
    }
  }
}
// #enddocregion little-tour