Subject

A special type of Observable which shares a single execution path among observers
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Examples
Example 1: simple Subject
( Stackblitz )
// RxJS v6+
import { Subject } from 'rxjs';
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const sub = new Subject();
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sub.next(1);
sub.subscribe(x => {
  console.log('Subscriber A', x);
});
sub.next(2); // OUTPUT => Subscriber A 2
sub.subscribe(x => {
  console.log('Subscriber B', x);
});
sub.next(3); // OUTPUT => Subscriber A 3, Subscriber B 3 (logged from both subscribers)
Related Recipes
​Battleship Game​
​Lockscreen​
Additional Resources
​Subject 📰 -
Official docs
​Subject - In Depth Dev Reference
📁 Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/internal/Subject.ts​

Last modified 2yr ago