Angular2: setTimeout only called once

Question

I'm implementing functionality in Angular2 that requires the use of setTimeout.

My code:

  public ngAfterViewInit(): void {
    this.authenticate_loop();
  }

  private authenticate_loop() {
    setTimeout (() => {
      console.log("Hello from setTimeout");
    }, 500)
  }

setTimeout is started by ngAfterViewInit but the loop is only executed once, eg. "Hello fromsetTimeout" is only printed once.

Question: How can I change the code to make the setTimeout work?

Answer 1

 private authenticate_loop() {
    setInterval (() => {
      console.log("Hello from setInterval");
    }, 500)
 }

setTimeout will run just one time, unless you create another setTimeout.