Angular 5 - equivalent to $interval from AngularJS

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I'm trying to find the equivalent of the $interval from AngularJS into Angular 5.

$interval will repeat a function call or a block a specified number of times with a delay in-between. This is what I would like to do, written in AngularJS:

$interval(function() {
      myFunction(param1, param2)
      i++;
    }, delay, count);

Make abstraction of i, I'm using it for a different purpose. How can this be achieved in Angular 5? I already tried using rxjs/Observable but I can't seem to find a way to include both the delay and the run multiple times part.

Thank you.

You may make use of the timer static method and take operator.

import {timer} from 'rxjs';
import {take} from 'rxjs/operators';  

timer(yourDelay, 1000).pipe(
   take(yourCount)).subscribe(x=>{
    // do here whatever you want to do here
    })

I assumed you use RxJS 6.

Angular 5 - equivalent to $interval from AngularJS - angular - html, I'm trying to find the equivalent of the $interval from AngularJS into Angular 5. $ interval will repeat a function call or a block a specified number of times with a� How can this be achieved in Angular 5? I already tried using rxjs/Observable but I can’t seem to find a way to include both the delay and the run multiple times part. Thank you.

You can use interval with take to control how many times you want to call your function.

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/interval';

const delay = 1000; // every 1 sec
const count = 5; // process it 5 times

Observable.interval(delay).take(count).subscribe(() => {
  myFunction(param1, param2);
});

AngularJS: API: $interval, Overview. AngularJS's wrapper for window.setInterval . The fn function is executed every delay milliseconds. The return value of registering an interval function� This site refers to AngularJS (v1.x). Go to the latest Angular.. This site and all of its contents are referring to AngularJS (version 1.x), if you are looking for the latest Angular, please visit angular.io.

You can use interval from rxjs

import { interval } from 'rxjs/observable/interval';

//emit value in sequence every 1 second
const source = interval(1000);
//output: 0,1,2,3,4,5....
const subscribe = source.subscribe(val => console.log(val));

This will emit new value after every 1 second

The RxJS library, import { interval } from 'rxjs'; // Create an Observable that will publish a value on an import { filter, map } from 'rxjs/operators'; const nums = of(1, 2, 3, 4, 5);� This tutorial explains how the timer services $timeout and $interval works in AngularJS, and how you can use them to schedule function calls.

You can refer this tutorial for your query. its working fine in Angular 5 also.. I tried it and its given here simple way.

import { Observable } from "rxjs";

import { IntervalObservable } from "rxjs/observable/IntervalObservable";

import { TimerObservable } from "rxjs/observable/TimerObservable";

import "rxjs/add/operator/takeWhile";

Declare variable in class
export class MyComponent implements OnInit { 

private alive: boolean; 

}

In ngOnInit() function use below code to call service after particular interval of time
ngOnInit() {

IntervalObservable.create(10000)  .takeWhile(() => this.alive) 
// only fires when component is alive  

.subscribe(() => { this.yourService.getDataList()   
.subscribe(data => { this.agentData = data.json().result; console.log(this.agentData);   });
 });
}

Using observables to pass values, Whether the stream was keystrokes, an HTTP response, or an interval timer, the For example, to create an observable equivalent to the of(1, 2, 3) above, you� Angular is a new version of the AngularJS framework, developed by Google. It comes with a complete rewrite, and various improvements including optimized builds and faster compile times. In this Angular 5 tutorial, we are going to build a notes app from scratch. If you’ve been waiting to learn Angular 5, this tutorial is for you.

AngularJS $timeout and $interval, var myapp = angular.module("myapp", []); myapp.controller("MyController", function($scope, $timeout){ });. Notice the� Angular: Better structure compare to AngularJS, easier to create and maintain large applications but behind in AngularJS in case of small applications. Note: Angular is a great framework it has many improvements in terms of AngularJS, it is good at bigger application also good at smaller application, but there is a huge competition between

interval, content_copy import { interval } from 'rxjs/observable/interval'; //emit value in sequence every 1 second const source = interval(1000); //output: 0,1,2,3,4,5. because this doesn't refer to your original object in your callback when you invoke it that way. -- if you want this to work, you can declare your function as a lambda, like this: private callback = => { clearInterval(this.interval); };-- you can call it from anywhere in your class just like a regular method (even make it public), and then this will work correctly.

angular — Angular 5, J'essaie de trouver l'�quivalent du $interval d'AngularJS dans Angular 5. $ interval r�p�tera un appel de fonction ou un bloc un nombre sp�cifi� de fois avec un� To delegate the starting and stopping of the interval, you can create start() and stop() functions whenever you want to stop and start them again from a specific event. I have created a snippet below showing the basics of starting and stopping an interval, by implementing it in view through the use of events (e.g. ng-click) and in the controller.

Comments
  • github.com/angular/angular/issues/6539
  • Yes, I am using RxJS 6. But I don't have an Observable. Should I create a new one using Observable.create() ? Or I should have an existing one to use this approach?
  • If you do not have an observable, you may use timer static method (which creates an observable for you). Check the updated answer.
  • After using the timer this gave the expected result. Thank you for the solution and for the explanations.
  • Great and simple solution!
  • This gives me back 'Property interval does not exists on type Observable' at build time. I think this is caused by the version of RxJS. I am using RxJS 6.
  • @BogdanPușcașu it should still work even for v6, I've updated the answer, please try adding import 'rxjs/add/observable/interval';