問題：
I'm looking into Angular RxJs patterns and I don't understand the difference between a BehaviorSubject and an Observable .我正在研究 Angular RxJs 模式，但我不明白BehaviorSubject和Observable之間的區別。
From my understanding, a BehaviorSubject is a value that can change over time (can be subscribed to and subscribers can receive updated results).根據我的理解， BehaviorSubject是一個可以隨時間變化的值（可以訂閱並且訂閱者可以接收更新的結果）。 This seems to be the exact same purpose of an Observable .這似乎與Observable目的完全相同。
When would you use an Observable vs a BehaviorSubject ?你什麼時候會使用Observable和BehaviorSubject ？ Are there benefits to using a BehaviorSubject over an Observable or vice versa?在Observable上使用BehaviorSubject是否有好處，反之亦然？
解決方案：
參考一： https://en.stackoom.com/question/2fiCw參考二： https://stackoom.com/question/2fiCw