how to use the interval function from the rxjs library in javascript

setInterval is a commonly used function in JavaScript to repeatedly execute a code snippet after a certain amount of time. However, when it comes to reactive programming, it is more efficient to use the interval function from the rxjs library.

The interval function creates an Observable that emits an infinite sequence of ascending integers, with a specified interval of time between each emission. Here's how to use it:

index.tsx
import { interval } from 'rxjs';

const subscription = interval(1000) // interval of 1 second
  .subscribe(num => console.log(num));

// to stop the interval after a certain duration
setTimeout(() => {
  subscription.unsubscribe();
}, 5000); // interval stops after 5 seconds
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In the code above, we import the interval function from the rxjs library. We then create an Observable that emits a sequence of integers every 1 second. The subscribe method is used to listen for emitted values and log them to the console.

To stop the interval after a certain duration, we can use the setTimeout function to unsubscribe from the Observable after 5 seconds has elapsed.