如何将两个可观察数组合并为一个数组? [英] How to concat two observable arrays into a single array?

问题描述

示例:

var s1 = Observable.of([1, 2, 3]);

var s2 = Observable.of([4, 5, 6]);

s1.merge(s2).subscribe(val => {
   console.log(val);
})

我想得到[1,2,3,4,5,6]

I want to get [1,2,3,4,5,6]

代替

[1,2,3]

[4,5,6]

推荐答案

forkJoin 效果很好，你只需要扁平化数组:

forkJoin works wells, you just need to flatten the array of arrays :

const { Observable } = Rx;

const s1$ = Observable.of([1, 2, 3]);
const s2$ = Observable.of([4, 5, 6]);

Observable
  .forkJoin(s1$, s2$)
  .map(([s1, s2]) => [...s1, ...s2])
  .do(console.log)
  .subscribe();

输出:[1, 2, 3, 4, 5, 6]

Plunkr 演示:https://plnkr.co/edit/zah5XgErUmFAlMZZEu0k?p=preview

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