如何将两个可观察的数组合并为一个数组?
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]
答
forkJoin
效果很好,您只需要展平数组数组即可:
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]
要演示的插件: https://plnkr.co/edit/zah5XgErUmFAlMZZEu0k?p=preview