Subjects in RxJS | Observables | Angular 12+

In this lecture, let's learn what is a subject in RxJS. A Subject is a special type of Observable that allows values to be multicasted to many Observers. Subjects are like EventEmitters.

We mostly use subjects to perform cross component communication. We can communicate between two or more components which are not related, using subjects. We have already achieved the same thing using service and EventEmitter. Now, let's try it with service and Subject.

[Aurobinda-hn]

Excellent. This is what exactly I wanted. Please don't stop posting videos on YouTube.

[heybiplabb]

The way you teach us is just remarkable. Sometimes are confused that is we really learn Angular from YouTube or a paid Udemy course. Kudos to you sir.

[vivianequeiroz]

Your explanation was clear as water, thank you!!!

[vaishnavik]

Thank you so much. I think I've found a good Angular tutorial YouTube channel. Before watching this video, I didn't have an idea about transferring data between unrelated components. Now, it's clear to me. From this video, I understand how to communicate with unrelated components using event emitters and subjects.

[MyBrilliantSupport]

Great Thanks Very Clear Tutorial About Subject...!

[oksureapollo]

Thanks a lot, this has helped me big time with the project Im currently working on👍👍

[mdgosoddin]

Excellent knowledge
I have 5 years of experience
Even though I appreciate you

[ranjanadeore]

Thank you sir for uploading value your video very helpful.

[kirillzlobin]

This was an amazing explanation. Thank you!!!

[nagaranjandarbha]

Are there any cases where use of Subject is recommended over EventEmitter?

[rey]

Still it does not explain why using an Subject over an Event emitter, having to know both concepts is good, but its way more important to know when to use one over the other.

[mahendrababu]

now i am clear with subjects... provide same like this for the observables and which is the best to use in projects i want to using a service... if already have please share the video link...thanks

[yumraj]

Nice description, Do you have a repos for the same?

[sharatha]

Good one. Can you please add different unit test topics in Angular.

[igorr]

How simple is that. Try to do the same in redux or vuex.

[manojradharapu]

what is the difference between Subject and EventEmitter ?

[sivatejag]

Let's say there is no button and I want to achieve same component interaction..how do we achieve it?

[narenk]

what is difference between eventemitter vs Obsevable?

[fbsouza]

If the two components were children of the same parent, should I still use subject?

[shriyanagrath]

HI thanks for the explanation. My data being passed is little complicated, so I am using 'any' type definitions in the methods. I see an error subscribe does not exist on type '(data: any) => void'. Do you have any idea where I might be going wrong?