Angular 2 setinterval() keep running on other component

Question

I have the following method in one component:

ngOnInit()
        {
            this.battleInit();
            setInterval(() => {
                this.bat         


        

Answer 1

every 40 seconds

 polling: any;

  ngOnInit() {

    this.consulta();
    this.pollData();
  }

 pollData () {
    this.polling = setInterval(() => {
    this.consulta();

  },40*1000)

 ngOnDestroy() {
    clearInterval(this.polling);
  }