在StackBlitz上进行rxjs编程练习

网址：stackblitz.com/

新建一个Angular应用，类型选择RxJS：

StackBlitz会自动生成应用模板：

源代码：

import { of } from 'rxjs'; 
import { map } from 'rxjs/operators';


const source = of('World').pipe(
  map(x => `Hello ${x}!`)
);

source.subscribe(console.log);

import { Observable } from "rxjs";

const stream$ = new Observable(subscriber => {
  setTimeout(() => {
    subscriber.next([1, 2, 3]);
  }, 500);
  setTimeout(() => {
    subscriber.next({ a: 1000 });
  }, 1000);
  setTimeout(() => {
    subscriber.next("end");
  }, 3000);
  setTimeout(() => {
    subscriber.complete();
  }, 4000);
});

// 启动流

class Subscriber {
  constructor(private name: string) {}
  complete = () => console.log("name: " + this.name + " done");

  next = v =>
    console.log("time: " + Date.now() + " name: " + this.name + " value: " + v);
  error = () => console.log("error");
}

const s1 = new Subscriber("Jerry");
const s2 = new Subscriber("Tom");

stream$.subscribe(s1);
stream$.subscribe(s2);

运行输出：

Observable可以重复subscribe，互不干扰。

更多Jerry的原创文章，尽在：“汪子熙”: