How JavaScript works

You'll understand what JavaScript is, where it runs, and why it's essential for interactive web applications.

You'll learn how to declare variables and work with core data types like strings, numbers, and booleans to store and manipulate information.

You'll grasp how JavaScript manages variable access through scope chains and execution contexts, and how closures let functions remember their environment.

You'll understand how JavaScript handles asynchronous operations and the event loop that keeps your code responsive without blocking.