Diving deep into Scope, Lexical Environment, and The Scope Chain in JavaScript with a lot of code examples and visuals. This is a HOT interview topic and this video cover everything that happens under the hood. The video is a little long but I REQUEST YOU to watch it fully, this concept will help us in later videos. 🙏
Along with Code Examples, I’ve shown all these concepts visually so that it helps you better understand. And not only these, but I also covered a proper demo of Scope and The Scope chain in Browser. That’s amazing, do watch it. You’ll definitely fall in love with The Scope Chain in JS. ❤️
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Topics covered :
00:00 – Introduction – Scope and the Lexical Environment
00:27 – Code Example for understanding Scope
03:31 – Understanding the meaning of Scope
04:22 – Diving deep into code & behind the scenes
07:09 – Introduction to Lexical Environment
07:42 – What is the meaning of `Lexical`?
08:36 – Lexical Environment definition
08:43 – Understanding Lexical Environment visually
10:41 – How Scope and Lexical Environment works in JavaScript
13:10 – The Scope Chain in JavaScript
14:15 – Quick Revision of Scope, Lexical Environment and the Scope Chain
15:27 – Browser Demo of Lexical Environment & The Scope Chain
18:23 – Teaser – Deep dive into let & const and their Scope & Hoisting in JS
19:14 – Thank you for watching Namaste JavaScript 🙏
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