skip
Skip allows you to ignore the first x emissions from the source. Generally
skip is used when you have an observable that always emits certain values on subscription that you wish to ignore. Perhaps those first few aren't needed or you are subscribing to a Replay or BehaviorSubject and do not need to act on the initial values. Reach for skip if you are only concerned about later emissions.Example 1: Skipping values before emission
// RxJS v6+
import { interval } from 'rxjs';
import { skip } from 'rxjs/operators';
//emit every 1s
const source = interval(1000);
//skip the first 5 emitted values
const example = source.pipe(skip(5));
//output: 5...6...7...8........
const subscribe = example.subscribe(val => console.log(val));
// RxJS v6+
import { from } from 'rxjs';
import { skip, filter } from 'rxjs/operators';
const numArrayObs = from([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
// 3,4,5...
const skipObs = numArrayObs.pipe(skip(2)).subscribe(console.log);
// 3,4,5...
const filterObs = numArrayObs
.pipe(filter((val, index) => index > 1))
.subscribe(console.log);
//Same output!
- 🎥 💵 - André Staltz
Last modified 3yr ago