Typescript: Calling a “method” of another class

Question

I\'m pretty new to java-/type-script and I\'ve some troubles grasping their concepts. I would like to call a method of another class. However, I\'ve been unsuccessful s

Answer 1

It may not be right for all situations, but for the angular app I'm working on, I'm been using a service - here's what angular says about them. You can then call them like this:

smile.service.ts

export class SmileService {

  addSmileMethod(input: string): string {
    return input + ' :)';
  }

}

smile-component.ts

import { SmileService } from './path/to/smile.service';

export class SmileComponent {

  constructor(private smileService: SmileService) { }

  ngOnInit() {
    // Using the service
    const smileString = this.smileService.addSmileMethod('Hello!');
    console.log(smileString);

    // Output is:
    // Hello! :)
  }

}