How to create an observable using RxJS to emit a sequence of numbers

Question

With the help of code can you tell me How to create an observable using RxJS to emit a sequence of numbers?

Answer 1

You can create an observable to emit a sequence of numbers using RxJS range or interval:

1. Using range:

import { range } from 'rxjs';

const numbers$ = range(1, 5); // Emits 1, 2, 3, 4, 5

numbers$.subscribe(val => console.log(val));

2. Using interval:

import { interval, take } from 'rxjs';

const numbers$ = interval(1000).pipe(take(5)); // Emits 0 to 4 every second

numbers$.subscribe(val => console.log(val));