Question

window

函数签名: window(windowBoundaries: Observable): Observable

时间窗口值的 observable 。

示例

示例 1: 打开由内部 observable 指定的窗口

( StackBlitz | jsBin | jsFiddle )

// RxJS v6+
import { timer, interval } from 'rxjs';
import { window, scan, mergeAll } from 'rxjs/operators';

// 立即发出值，然后每秒发出值
const source = timer(0, 1000);
const example = source.pipe(window(interval(3000)));
const count = example.pipe(scan((acc, curr) => acc + 1, 0));
/*
  "Window 1:"
  0
  1
  2
  "Window 2:"
  3
  4
  5
  ...
*/
const subscribe = count.subscribe(val => console.log(`Window ${val}:`));
const subscribeTwo = example
  .pipe(mergeAll())
  .subscribe(val => console.log(val));

其他资源

• window :newspaper: - 官方文档
• 使用 window 分割 RxJS observable :video_camera: :dollar: - André Staltz

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源码: https://github.com/ReactiveX/rxjs/blob/master/src/internal/operators/window.ts