Learn JavaScript

Learn the JavaScript fundamentals you'll need for front-end or back-end development.

### Why Learn JavaScript?

JavaScript is among the most powerful and flexible programming languages of the web. It powers the dynamic behavior on most websites, including this one.

### Take-Away Skills:

You will learn programming fundamentals and basic object-oriented concepts using the latest JavaScript syntax. The concepts covered in these lessons lay the foundation for using JavaScript in any environment.

### Up Next:

After learning JavaScript basics, try applying JavaScript to:
* [Learn Intermediate JavaScript](https://www.codecademy.com/learn/learn-intermediate-javascript)
* [Build games](https://www.codecademy.com/learn/learn-phaser)
* [Build interactive websites](https://www.codecademy.com/learn/build-interactive-websites)

• Welcome to Learn JavaScript: Learn about what the JavaScript course has in store!
• Informational: Welcome to Learn JavaScript
• Introduction: In this course, you will learn about JavaScript data types, built-in methods, and variables.
• Lesson: Introduction to JavaScript
• Lesson: Variables
• Project: Kelvin Weather
• Project: Dog Years
• Quiz: Introduction to JavaScript
• Quiz: Variables
• Article: JavaScript Versions: ES6 and Before
• Article: Make the Most of Your Codecademy Membership
• Conditionals: Learn how to use if, else if, else, switch, and ternary syntax to control the flow of a program in JavaScript.
• Lesson: Conditional Statements
• Project: Magic Eight Ball
• Project: Race Day
• Quiz: Conditional Statements
• Functions: Learn about JavaScript function syntax, passing data to functions, the return keyword, ES6 arrow functions, and concise body syntax.
• Lesson: Functions
• Project: Rock, Paper, or Scissors
• Project: Sleep Debt Calculator
• Quiz: Functions
• Scope : Learn about global and block level scope in JavaScript.
• Lesson: Scope
• Project: Training Days
• Quiz: Scope
• Arrays : In this course, you will learn about arrays, a data structure in JavaScript used to store lists of data.
• Lesson: Arrays
• Project: Secret Message
• Quiz: Arrays
• Loops : In this course, you will learn how to use for and while loops to execute blocks of code multiple times.
• Lesson: Loops
• Project: Whale Talk
• Quiz: Loops
• Iterators: In this course, you will learn how to use iterator methods to simplify the process of looping over arrays.
• Lesson: Higher-Order Functions
• Lesson: Iterators
• Quiz: Higher Order Functions and Iterators
• Project: Grammar Checker
• Objects: Learn about JavaScript ES6 object syntax to model real-world items.
• Lesson: Objects
• Lesson: Advanced Objects
• Project: Meal Maker
• Project: Team Stats
• Quiz: Objects
• Next Steps: You've completed the Learn JavaScript course! What's next?
• Informational: Learn JavaScript: Next Steps