如何仅从angular 4的订阅中获取最新值

Question

如何仅从角度4的订阅中获取最新值？

this.AbcSrvice.value.subscribe(data => {console.log(data)})

Answer 1

使用最后一个运算符：https://www.learnrxjs.io/operators/filtering/last.html

import { last } 'rxjs/operators';


this.AbcSrvice.value
.pipe(last())
.subscribe(data => {console.log(data)});