HTML CSS and JavaScript for Beginners - A Web Design Course - ES6 JavaScript

The video tutorial covers variable declaration in JavaScript using let, const, and var. It explains the differences between function scope and global scope, and how let and const introduce block scope. The tutorial also compares the use of let and var in loops, highlighting the benefits of using let for block-scoped variables. Finally, it discusses the immutability of const variables and best practices for using let and const over var.

Why is it considered best practice to use 'let' and 'const' instead of 'var'?

Describe a scenario where using 'let' would be more appropriate than 'var'.