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Subjects in RxJS | Observables | Angular 12+

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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...

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26 авг 2024

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Комментарии : 48

@heybiplabb Год назад

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

@vivianequeiroz6744 2 года назад

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

@vaishnavik8221 11 месяцев назад

Thank you so much. I think I've found a good Angular tutorial RU-vid 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.

@rey6253 Год назад

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.

@mdgosoddin192 8 месяцев назад

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

@nagaranjandarbha7255 2 года назад

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

@oksureapollo8486 2 года назад

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

@nirmesh44 Год назад

Best tutorial ever on angular

@ranjanadeore2957 2 года назад

Thank you sir for uploading value your video very helpful.

@kirillzlobin7135 7 месяцев назад

This was an amazing explanation. Thank you!!!

@scottvickrey2743 2 года назад

I love the way you make it so easy!!

@gtanmoy 2 года назад

Excellent! Learnt a lot. Thank you

@NagarajaT 2 года назад

That was an excellent explanation !!

@emad_arnesto9175 Год назад

thank you for this useful tutorial

@user-os1tb4rr2v Год назад

Nicely explained, thank you.

@GauravKumar-rh1yl Год назад

Very Nice explanation

@sharatha6533 2 года назад

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

@procademy 2 года назад

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

@sharatha6533 2 года назад

@@procademy Thanks a lot 🙂

@yumraj12 10 месяцев назад

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

@devareddy726 11 месяцев назад

great explaination

@marceloteixeiramodesti2268 Год назад

Very nice. Thank you

@compton8301 2 года назад

You're amazing. Thank you.

@viniciussantosaguiar9543 Год назад

Great vídeo!

@user-os7ef2tp9g Год назад

God bless you!

@sivatejag Год назад

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

@mainrowtech8437 2 года назад

Great work. thank you

@shriyanagrath3714 Год назад

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?

@sergeymigel4680 2 года назад

thanks!

@fbsouza Год назад

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

@manojradharapu1800 2 года назад

what is the difference between Subject and EventEmitter ?

@procademy 2 года назад

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 2 года назад

@@procademy Thanks , it is clear

@arpitachakraborty3162 Год назад

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 Год назад

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.