JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Global Versus Local Scope in Functions with JavaS

This video tutorial introduces the concept of scope in JavaScript, focusing on the differences between global and local scope. It explains how scope determines the accessibility of variables within a program and provides examples to illustrate these concepts. The tutorial emphasizes the importance of understanding scope for efficient programming and offers exercises for further practice.

What is the difference between global scope and local scope in JavaScript?

How does the context of code affect variable accessibility in JavaScript?

What happens when a variable is declared inside a function in terms of scope?

Explain how global variables can lead to unintended problems in your code.

Why is it considered a better practice to use 'let' or 'const' instead of 'var'?

How can you test the accessibility of a variable in different scopes?

What is the significance of understanding scope when optimizing code performance?