JS Learning

JavaScript Functions

Master function declarations, expressions, arrow functions, and parameters

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Course Overview

Functions are the building blocks of JavaScript programs. In this course, you'll learn different ways to create and use functions, making your code more organized, reusable, and powerful.

📚 4 Sections⏱️ 60 min💻 Hands-on exercises

1. Function Declarations

Section 1

Imagine you have a recipe for making a sandwich. Instead of explaining the steps every time someone wants a sandwich, you write the recipe once and anyone can follow it. Functions work the same way!

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2. Function Expressions

Section 2

There's another way to create functions - by storing them in variables! It's like putting a recipe card in a labeled box.

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3. Arrow Functions

Section 3

Arrow functions are the modern, streamlined way to write functions. They're called "arrow" functions because they use => which looks like an arrow!

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4. Parameters and Arguments

Section 4

Functions become really powerful when they can accept and work with different inputs. Let's learn how to make flexible functions!

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What You'll Learn

Function Fundamentals

Create reusable code blocks with function declarations

Function Expressions

Store functions in variables for flexible programming

Modern Arrow Functions

Write cleaner code with ES6 arrow function syntax

Advanced Parameters

Use default and rest parameters for flexible functions

Start with Function Declarations