How to use clearInterval() in Angular 4

You can set like this,

  this.interval = setInterval(() => {

  }, 1000);

and clear like this,

if (this.interval) {
   clearInterval(this.interval);
}

If you want in same method with some condition

var a = 1;
    this.interval = setInterval(() => {
      console.log(a++)
      if(a > 30){
        clearInterval(this.interval);
      }
    }, 1000);