windowTime

signature: windowTime(windowTimeSpan: number, windowCreationInterval: number, scheduler: Scheduler): Observable

Observable of values collected from source for each provided time span.

Examples

Example 1: Open new window every specified duration

( jsBin | jsFiddle )

import { timer } from 'rxjs/observable/timer';
import { windowTime, tap, mergeAll } from 'rxjs/operators';

//emit immediately then every 1s
const source = timer(0, 1000);
const example = source.pipe(
  //start new window every 3s
  windowTime(3000),
  tap(_ => console.log('NEW WINDOW!'))
);

const subscribeTwo = example
  .pipe(
    //window emits nested observable
    mergeAll()
    /*
        output:
        "NEW WINDOW!"
        0
        1
        2
        "NEW WINDOW!"
        3
        4
        5
      */
  )
  .subscribe(val => console.log(val));

Additional Resources


:file_folder: Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/internal/patching/operator/windowTime.ts

results matching ""

    No results matching ""