Block Scope With let & const

The video tutorial explains the concept of scope in JavaScript, covering global, function, and block-level scopes. It demonstrates how variables declared with var, let, and const behave differently in these scopes. The tutorial highlights the peculiarities of var, which can lead to security risks and confusion, and contrasts it with let and const, which follow block-level scoping. Examples using functions, if statements, and loops illustrate these concepts, emphasizing the importance of understanding scope to avoid common pitfalls in JavaScript programming.

Can you have a variable with the same name in different scopes? Explain your answer.

What are the potential risks of using 'var' in JavaScript?

How does the use of 'let' in a loop affect the variable's value in the global scope?