What is the Event Loop?
The Event Loop is a mechanism in JavaScript that allows the runtime to handle asynchronous operations. It ensu...
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If the call stack is like a stack of plates, why can't it add another plate to the stack instead of waiting for it to be empty?
It can, so long as the next "plate" is in the scope of the bottom "plate".
The Reason is Javascript is a Single Threaded.
Do you really think a plate analogy for a call stack is needed. I can't imagine a person even clicking on an article about event loop without prior understanding of a call stack. 🤔
Like 'how integrals work' article explaining how addition works. 🤷
The plate analogy might feel unnecessary for someone with even a basic understanding of how the Call Stack works, especially for developers who are already familiar with concepts like the Event Loop.
I agree that context matters, and simplifying too much can sometimes be more distracting than helpful.
Wow, thank you for the article!
I believe it's very helpful for developers to learn the fundamentals of the event loop, it is important for their future careers.
I know the idea of the topic was to show only the very basics of it.
However, it might be reasonable to mention some small additional details to avoid confusion:
For the browser environment, there is also a render step, and it is managed by Event Loop as well.
It is important because the heavy tasks in the queue can block the main thread and the next rerender will be managed later, therefore browser won't be able to maintain 60fps and the user will see a lagging interface.
Strictly speaking event loop is not a part of JavaScript specification, but it's a part of JS runtime. This might be important because different runtimes implement event loops differently. For example, the event loop in Node.js will have a NextTick queue while v8 won't have it.
The promise itself will not go to the microtasks queue, only its callback after promise resolution or rejection.
To dive deep, Jake Archibald's video from the JS conference can be very helpful!
Also, there are several open-source simulations of how the event loop works.
I also create one, feel free to check, I hope you find it interesting!
vault-developer.github.io/event-lo...
Thank you so much for this. Loved it.
This article needs examples. Could you add simple examples please?
Great i will try
Thank you for this!!
You are Welcome, Now every day I will try to share the Amazing Stuff. Thanks ❣️
Great, but if we had an image to see how these components interact with each other, it would have been a much bigger help to re-review our basics!
Appreciate your Suggestion
Well explained and understood 👏
Thanks
Great!
Thanks!!