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.
Subjects: rxjs.dev/api/i...

[@MyBrilliantSupport]

Great Thanks Very Clear Tutorial About Subject...!

[@heybiplabb]

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

[@vivianequeiroz6744]

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

[@vaishnavik8221]

Thank you so much. I think I've found a good Angular tutorial KZbin 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.

[@oksureapollo8486]

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

[@mdgosoddin192]

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

[@rey6253]

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.

[@nagaranjandarbha7255]

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

[@ranjanadeore2957]

Thank you sir for uploading value your video very helpful.

[@nirmesh44]

Best tutorial ever on angular

[@gtanmoy]

Excellent! Learnt a lot. Thank you

[@scottvickrey2743]

I love the way you make it so easy!!

[@kirillzlobin7135]

This was an amazing explanation. Thank you!!!

[@NagarajaT]

That was an excellent explanation !!

[@emad_arnesto9175]

thank you for this useful tutorial

[@mahendrababu6638]

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

[@GauravKumar-rh1yl]

Very Nice explanation

[@devareddy726]

great explaination

[@compton8301]

You're amazing. Thank you.

[@yumraj12]

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

[@marceloteixeiramodesti2268]

Very nice. Thank you

[@ДимаЕфремов-г6е]

God bless you!

[@viniciussantosaguiar9543]

Great vídeo!

[@mainrowtech8437]

Great work. thank you

[@sergeymigel4680]

thanks!

[@sivatejag]

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

[@fbsouza]

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

[@vibhuverma6623]

How your ngOnIt method gets called when you enter text?

[@manojradharapu1800]

what is the difference between Subject and EventEmitter ?

[@procademy]

Subject is an observable which makes component comunication easier. It has nothing to do with events or EventEmitter. But, we can use it pass value from one component to another which are not related. But, if we don't have subject and want to communicate between two components which are not related, we need to use the concept of property binding and event binding and combine these concepts to achieve it.

[@manojradharapu1800]

@@procademy Thanks , it is clear

[@shriyanagrath3714]

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?

[@narenk8077]

what is difference between eventemitter vs Obsevable?

[@arpitachakraborty3162]

I just want to know if we don't have any click function to trigger the event from service then how we can trigger that method ? What if I just need only the value in another component without any button click or anything ..

[@procademy]

The simple thing to understand here is that...what is going on in one component is not known to another component. If you want to pass a value from one component to another...the another component has to know that something has changed. For that we need to notify that component. To do that, we will have to emit some event. This event need not to be a click event, it can be any user defined event as well.

[@igorr4682]

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

[@sharatha6533]

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

[@procademy]

I have planned to do it at the end of this course.

[@sharatha6533]

@@procademy Thanks a lot 🙂

[@leninnani5222]

Waiting

[@billbortkevich2300]

Hi, could you discuss Subject a bit more? The official explanation is not too clear. Thank you

[@narenk8077]

Please update response from below queries

[@asrnyagmur9802]

13 dk services + 3 dk subject = Subjects in RxJs

[@greekplayback]

Thanks can you please share code in github ?

[@procademy]

Here is the github link to download the source code: github.com/manojjha86/complete-angular-13-course.git

[@greekplayback]

@@procademy Thanks 😃😃

[@shagunnikam3095]

@@procademy Thank you so much sir for this GitHub link.

[@nadruf]

so why using subject instead of eventemitter? i don't get it

[@meriamzayani]

Nicely explained, thank you.