Discussion on "Understanding how to work with the publish/subscribe model in JavaScript"

Hunter Trammell · 2022-06-26T02:54:36.359Z

Lately, I've been reading about data structures and algorithms to try and up my software development game. The pubsub model is something I have been particularly interested in as I use it a lot at work, but haven't had to implement one from the start...

How can you make it so simple, I usually make things complicated then get stuck. Thank you for sharing, it helps me solve the problem a lot faster.

Thanks! Happy to share and I’m glad you found it digestible, it can get for sure get more or less complicated depending on how you implement it

This is awesome, thanks for sharing 👍

Thank you! Glad you enjoyed 🙏🏻

Hey Carlon, fantastic intro!

Excited to share the Observer API - a well-rounded pubsub utility that unifies how we use native APIs like Reflect, Proxies and Object Accessors in JavaScript.

It's like the historic Object.observe() and already finds application in other ideas like OOHTML.

Hoping that someone finds it as interesting 😎

Appreciate it! That is very interesting I’ll have to look into it, thank you!

You make it look soooo simple, I'd have cultivated something complex!

And it looks really similar to equivalent things such as addEventListener, or on, off, and emit!

In this case, how would it be possible to unsubscribe a particular function?

Thank you! And yes it is very similar to using an event listener especially if you are creating a custom event listener. As for the unsubscribe, one implementation would be to update our subscribe method to return an unsubscribe function that essentially finds the index of the callback function and removes it from our bus[event] array. Since we are using array.push when adding our function we could utilize that to get our index since it returns the index of what was added!

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Understanding how to work with the publish/subscribe model in JavaScript

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