Learn the syntax for declaring functions in JavaScript. This chapter covers how to write a function declaration and the basic structure of a function.

Understand how to call or invoke functions in JavaScript. Learn the different ways to execute a function after it is declared.

Learn how to define and use parameters in functions. This chapter explains how to pass data into functions using parameters.

Understand how functions return values using the return statement. Learn how to send data back from a function to the caller.

Learn how to create functions using expressions. This chapter covers anonymous functions and assigning functions to variables.

Understand the syntax and usage of arrow functions. Learn the concise syntax introduced in ES6 for writing functions.

Compare function expressions and arrow functions, highlighting key differences such as syntax, this binding, and usage.

Understand the difference between global and local scope in JavaScript. Learn where variables are accessible depending on where they are declared.

Learn about block scope and how let and const differ from var. Understand how block-level scoping works in modern JavaScript.

Get introduced to closures and their importance in JavaScript. Learn what closures are and why they matter.

Explore simple examples to understand how closures work. See practical code examples demonstrating closures in action.