RxJS - 多播運算子 publishLast

publishBehaviour 使用 AsyncSubject，並返回 ConnectableObservable。必須使用 connect() 方法訂閱所建立的可觀測物件。

示例

import { interval } from 'rxjs';
import { take, publishLast} from 'rxjs/operators';

let observer = interval(1000).pipe(
   take(10),
   publishLast()
);
const subscribe_one = observer.subscribe(
   x => console.log("Value from Sub1 = "+x)
);
const subscribe_two = observer.subscribe(
   x => console.log("Value from Sub2 = "+x)
);
observer.connect();

輸出

列印頁面