Modern Web Design with HTML5, CSS3, and JavaScript - JavaScript – Let and Const Variables

The video tutorial introduces the concept of variables in JavaScript, focusing on the use of 'var', 'let', and 'constant'. It explains the immutability of constants and how they differ from 'var' and 'let', which allow reassignment. The tutorial also covers the scope of variables, emphasizing block-level scope and the use of curly brackets. Practical examples are provided to illustrate these concepts, encouraging viewers to experiment with variable declarations and understand their behavior in different scopes.

What is the main difference between 'const' and 'var' in JavaScript?

Explain the purpose of using 'let' in JavaScript.

What happens if you try to reassign a value to a constant variable?

Describe how block scope works in JavaScript.

Why is it beneficial to use 'const' for variable declarations?

How does the scope of a variable affect its accessibility in JavaScript?

What is the significance of the initializer when declaring a constant?