typescript 使用setTimeout异步观察

Posted 2021-05-21

import {Observable} from "rxjs";
let numbers = [1,5,10];
let source = Observable.create(observer=>
    {
        let index = 0;
        let produceValue = ()=>{
            observer.next(numbers[index++]);
            if (index<numbers.length){
                setTimeout(produceValue,2000);
            }
            else{
                observer.complete();
            }
        }
        produceValue();
    }
);

source.subscribe(
    value=>console.log(`value:${value}`),
    e=>console.log(`error: ${e}`),
    ()=>console.log("complete")
);