Skill level
Beginner
Time to complete
Approx. 20 hours
Certificate of completion
Yes
Prerequisites
None
Course
Free
Learn JavaScript
Learn how to use JavaScript — a powerful and flexible programming language for adding website interactivity.
2,169,786 learners enrolled
Syllabus
11 lessons • 12 projects • 8 quizzes
Welcome to Learn JavaScript
1
Learn about what the JavaScript course has in store!
Informational
Welcome to Learn JavaScript!
2
Introduction
In this course, you will learn about JavaScript data types, built-in methods, and variables.
Lesson
Introduction to JavaScript
Lesson
Variables
Kelvin Weather
Project
Dog Years
Project
Introduction to JavaScript
Quiz
JavaScript Versions: ES6 and Before
Article
Make the Most of Your Codecademy Membership
Article
3
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
Magic Eight Ball
Project
Race Dog
Project
Conditional Statements
Quiz
4
Functions
Learn about JavaScript function syntax, passing data to functions, the return keyword, ES6 arrow functions, and concise body syntax.
Lesson
Functions
Rock, Paper, or Scissors
Project
Sleep Debt Calculator
Project
Functions
Quiz
5
Scope
Learn about global and block level scope in JavaScript.
Lesson
Scope
Training Days
Project
Scope
Quiz
6
Arrays
In this course, you will learn about arrays, a data structure in JavaScript used to store lists of data.
Lesson
Arrays
Secret Message
Project
Arrays
Quiz
7
Loops
In this course, you will learn how to use for and while loops to execute blocks of code multiple times.
Lesson
Loops
Whale Talk
Project
Loops
Quiz
8
Iterators
In this course, you will learn how to use iterator methods to simplify the process of looping over arrays.
Lesson
Higher-Order Functions
Grammar Checker
Project
Higher Order Functions and Iterators
Quiz
Lesson
Iterators
9
Objects
Learn about JavaScript ES6 object syntax to model real-world items.
Lesson
Objects
Lesson
Advanced Objects
Meal Maker
Project
Team Stats
Project
Objects
Quiz
10
Next Steps
You’ve completed the Learn JavaScript course! What’s next?
Informational
Learn JavaScript: Next Steps
Projects in this course
Reviews from learners
"It is so helpful to have a thoroughly designed curriculum put together for a step-by-step learning journey. The little coding tasks and bigger projects are well designed to reinforce the concepts."
Dan
Codecademy Learner @ Australia
"The courses are hands-on and allow you to practice as you learn so the concepts stick better. Their Career Paths and interview prep content also offer general insights and helpful tips on job searching in tech."
Ly
Codecademy Learner @ USA
"Great courses and very helpful tips for career build-up! I love the learning methods, very complete with projects and quizzes that help you review your knowledge."
Aleksander
Codecademy Learner @ France
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About this course
You interact with JavaScript code all the time — you just might not realize it. It powers dynamic behavior on websites (like this one) and plays an important role in many fields, like front- and back-end engineering, game and mobile development, virtual reality, and more. In this course, you’ll learn JavaScript fundamentals that will be helpful as you dive deeper into more advanced topics.
Skills you'll gain
Build core programming concepts
Learn object-oriented concepts
Read and write JavaScript syntax
The platform
Hands-on learning
Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Unlock additional features with a paid plan
Practice projects
Guided projects that help you solidify the skills and concepts you’re learning.
Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.
Assessments
Earn a document to prove you’ve completed a course or path that you can share with your network.
Certificate of completion
Kelvin Weather
It's time to build fluency in JavaScript fundamentals. In this next Pro Project, we're going to practice variables and printing to the console in JavaScript...
Project
It's time to build fluency in JavaScript fundamentals. In this next Pro Project, we're going to practice variables and strings in JavaScript so you can hone...
Project
Dog Years
Build a virtual Magic Eight Ball using control flow in JavaScript. You’ll practice building decision-making into your programs and gain confidence in...
Project
Magic Eight Ball
