delay
- signature: delay(delay: number | Date, scheduler: Scheduler): Observable
Delay emitted values by given time.
- Examples
  - Example 1: Delay for increasing durations
Related Recipes
Additional Resources

delay

signature: `delay(delay: number | Date, scheduler: Scheduler): Observable`

Delay emitted values by given time.

Examples

Example 1: Delay for increasing durations

import { of } 'rxjs/observable/of';
import { merge } from 'rxjs/observable/merge';
import { mapTo, delay } from 'rxjs/operators';
//emit one item
const example = of(null);
//delay output of each by an extra second
const message = merge(
  example.pipe(mapTo('Hello')),
  example.pipe(mapTo('World!'), delay(1000)),
  example.pipe(mapTo('Goodbye'), delay(2000)),
  example.pipe(mapTo('World!'), delay(3000))
);
//output: 'Hello'...'World!'...'Goodbye'...'World!'
const subscribe = message.subscribe(val => console.log(val));