Promise VS Rxjs

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Promise

let promise = new Promise(resolve => {
    let timer = setTimeout(() => {
        resolve('promise resolve');
    }, 2000);
});

promise.then(value => {
    console.log('value = ', value)
});

Rxjs

let stream = new Observable(observer => {
    let timer = setTimeout(() => {
        observer.next('observer...');
    }, 2000);
});

let handle = stream.subscribe(value => console.log(value));

另 Rxjs :

// 取消订阅
setTimeout(()=>{
    handle.unsubscribe();
}, 1000)；

// 连续触发
let stream2 = new Observable(observer => {
    let count = 0;
    let timer = setInterval(() => {
        observer.next(count);
        count++;
    }, 1000);
});

stream2.subscribe(value => console.log('stream2 = ', value));