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Learn JavaScript for Free

JavaScript is the only language that runs natively in every web browser, and with Node.js it runs on servers too. That reach makes it the most-used language on the planet and a requirement for almost every web development job. This path is for anyone aiming at frontend, full-stack, or web work generally. You start with plain JavaScript, build real projects, then grow into the advanced patterns that separate juniors from seniors, all in 4 to 8 months of part-time study.
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The path at a glance

  1. 01 JavaScript Foundations
  2. 02 Build Projects
  3. 03 Advanced JavaScript
  4. 04 Web with Python and JavaScript (CS50)

Yes, JavaScript is free to learn and it's the language the web runs on. Every interactive website, from a dropdown menu to a full single-page app, uses it, and with Node.js the same language powers servers too. Start with freeCodeCamp's JavaScript Algorithms certification for the fundamentals, build projects through The Odin Project, then tackle async, closures, and modules. JavaScript has been the most-used programming language for over a decade in the Stack Overflow Developer Survey, so the skill stays in demand. Expect 4 to 8 months of part-time study to reach a job-ready level.

JavaScript has been the most commonly used programming language every year for over a decade in the Stack Overflow Developer Survey, used by roughly 62% of developers in 2024 (source: Stack Overflow Developer Survey 2024, https://survey.stackoverflow.co/2024/technology/).

Follow in order

Your Step-by-Step Path

  1. 1

    Step 1:JavaScript Foundations

    Variables, functions, arrays, objects, and DOM manipulation: the core of the language.

    beginner
    freeCodeCamp
    Certificate

    JavaScript Algorithms and Data Structures

    300h · Free

  2. 2

    Step 2:Build Projects

    Cement your knowledge by building real, deployed projects alongside a structured curriculum.

    beginner
    The Odin Project

    Foundations Path

    80h · Free

  3. 3

    Step 3:Advanced JavaScript

    Async/await, closures, prototypes, modules: the intermediate concepts that separate juniors from seniors.

    intermediate
    The Odin Project

    Full Stack JavaScript Path

    200h · Free

  4. 4

    Step 4:Web with Python and JavaScript (CS50)

    Harvard's web course brings it all together: Django, JavaScript, SQL, and deploying real applications.

    intermediate
    Harvard CS50
    Certificate

    CS50's Web Programming with Python and JavaScript

    84h · Free

Beyond the path

More Courses to Explore

The Odin Project

JavaScriptBeginner

Foundations Path

The Odin Project's Foundations path takes you from zero to a working understanding of HTML, CSS, and JavaScript. Project-based learning with real code you build and can show to employers.

Rating 4.980hDetails →
Scrimba

JavaScriptBeginner

Learn JavaScript for Free

Scrimba's interactive JavaScript course lets you edit code right inside the video player. Covers syntax, functions, arrays, objects, DOM manipulation, and building real mini-projects.

Rating 4.730hDetails →

FAQ

Frequently Asked Questions

Should I learn JavaScript or Python first?

If your goal is web development, start with JavaScript, since you need it either way and it runs right in the browser. If you're aiming at data or AI, start with Python. For general 'learn to code,' both are good.

Do I need to learn JavaScript before React?

Yes. React is a JavaScript library, and jumping in without solid JavaScript fundamentals leads to confusion. Get comfortable with functions, arrays, objects, and async first.

Is JavaScript hard to learn?

The basics are approachable, especially with project-based courses. The tricky parts (async/await, closures, the 'this' keyword) come later, and The Odin Project's JavaScript path explains them well.

What's the difference between JavaScript and Node.js?

JavaScript is the language; Node.js is a runtime that lets JavaScript run outside the browser, on servers. Learning JavaScript first, then Node.js, lets you build both frontend and backend.

Can I get a job with just JavaScript?

Paired with HTML, CSS, and React, yes, that's a standard frontend job profile. Add Node.js and you're a full-stack candidate.

Other goals

Other Learning Paths

Web DeveloperView →Frontend DevView →Backend DevView →PythonView →