Asynchronous JavaScript & EVENT LOOP from scratch 🔥 | Namaste JavaScript Ep.15

In-depth explanation of Event Loop, Web APIs, MicroTask Callback Queue, and how JavaScript works asynchronously in the web browser. Understand how setTimeout works behind the scenes along with fetch and event listeners.

You'll also find a lot of code examples along with a deep-dive explanation of the web APIs and how JavaScript code is executed asynchronously.

The only request is to watch this Episode of Namaste JavaScript with full attention. 🙏

It took a lot of effort to create this video, do comment down and let me know if you find it helpful.

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00:00 - Introduction
00:40 - How JS Engine Executes the Code using Call Stack
03:25 - Main Job of the Call Stack
03:51 - How does JavaScript perform async tasks
04:36 - Behind the Scenes in Browser
07:35 - Web APIs in JS
12:03 - How setTimeout Works behind the scenes in Browsers
16:09 - Event Loop & CallBack Queue in JS
18:59 - How Event Listeners Work in JS
23:43 - More about Event Loop
25:02 - Why do we need Event Loop
27:29 - How fetch() function works
30:26 - MicroTask Queue in JS
36:01 - What are MicroTasks in JS?
38:35 - Starvation of Functions in Callback Queue
39:48 - Teaser of the Next Video
40:53 - Thank you for watching Namaste JavaScript 🙏

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Akshay Saini
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