Javascript Let & Const Explained Simply

Published: 06 February 2022
on channel: DevSage

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'let' and 'const' are JavaScript keywords that were introduced in ES6 that allow you to declare variables that are limited to the scope of a block statement. The 'var' keyword, on the other hand, declares a variable globally or locally to an entire function. let and const are similar when it comes to scoping rules, but variables declared with const are read-only. const variables cannot be re-assigned after initially being declared.

📚Materials/References:
MDN Web Docs:
let - https://developer.mozilla.org/en-US/d...
const - https://developer.mozilla.org/en-US/d...

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⏰ Timestamps
1:05 - Difference between var and let/const
2:29 - let explained
6:05 - const explained

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