Best JavaScript Courses Online in 2026 (Ranked & Reviewed)

Last updated: June 2026. Written by Josh Hutcheson, OnlineCourseing editor. See our review methodology.

QUICK VERDICT

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JavaScript runs the web, and learning it well opens the door to front-end, back-end (with Node.js), and even mobile development. The good news is that the best JavaScript courses are remarkably good — a handful of instructors have spent years refining them, and they’re cheap or free. The choice mostly comes down to your level: complete beginner, or a coder who wants to stop copy-pasting and actually understand the language.

We’ve ranked the five JavaScript courses worth your time, by level and goal, and added an honest section on JavaScript certifications below. We confirmed each course was live and checked its rating at the time of writing. We earn a commission if you enroll through our links, which never changes the order.

HOW WE PICKED

We weighed the instructor’s reputation in the JavaScript community, whether the course is genuinely project-based (you learn JS by building, not just watching), learner ratings at scale, and whether each pick serves a distinct level — first-timer, deep-dive, advanced, comprehensive reference, or free university intro. We dropped courses that have since been retired.

1. Best overall — The Complete JavaScript Course (Udemy / Jonas Schmedtmann)

This is the JavaScript course most developers point newcomers to, and the numbers back it up — 4.7★ across more than 26,000 ratings, with over 2.2 million students. Jonas Schmedtmann teaches the modern language from first principles through to advanced topics, and the whole thing is built around real projects with clean, well-explained code. If you’re starting out and want one course to take you from zero to genuinely employable, this is it.

Best for: beginners and intermediate developers who want one definitive, project-driven course.  Worth knowing: Udemy list prices are inflated — wait for the usual $15–$20 sale. Schmedtmann’s CSS and Node courses are equally well-regarded if you continue.

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2. Best for deep understanding — JavaScript: Understanding the Weird Parts (Udemy)

If you can already write JavaScript but the “weird” behaviour — hoisting, closures, prototypal inheritance, the this keyword — still trips you up, Anthony Alicea’s course is the classic fix, at 4.6★ across 3,044 ratings and nearly 380,000 students. It explains why JavaScript works the way it does, so you stop guessing and start reasoning about your code. Many developers credit it with the moment JavaScript finally clicked.

Best for: developers who can write JS but don’t yet understand it.  Worth knowing: it’s not a first course — do a beginner course (like the pick above) first, then this.

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3. Best advanced — JavaScript: The Advanced Concepts (Zero To Mastery)

For developers aiming at senior-level fluency, Andrei Neagoie’s Zero To Mastery course goes the deepest — 27 hours across 240+ lessons on the JavaScript engine, scope and execution context, closures, prototypal inheritance, functional and object-oriented patterns, async, and modern ES features through ES2023. It’s pitched as the path to the “top 10%” of JS developers and is used as interview-prep reference material.

Best for: junior-to-mid developers who want senior-level depth and interview readiness.  Worth knowing: it’s advanced — you’ll want solid fundamentals first. It’s part of the ZTM Academy subscription; see our Zero To Mastery review.

View on Zero To Mastery →

4. Best comprehensive guide — JavaScript: The Complete Guide (Udemy / Academind)

Maximilian Schwarzmüller’s course (Academind) is the most encyclopaedic option — 4.6★ — covering beginner through advanced JavaScript in exhaustive detail, including topics other courses skip like browser APIs, security, performance, and testing. It’s long, but it doubles as a reference you return to, and it sets you up nicely for Schwarzmüller’s well-known React and Angular courses.

Best for: thorough learners who want one deep, reference-grade course and plan to move into a framework next.  Worth knowing: its length is a feature, not a sprint — pick this if you prefer depth over speed.

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5. Best free intro — HTML, CSS & JavaScript for Web Developers (Coursera / Johns Hopkins)

If you’d rather not pay anything to start, this Johns Hopkins course is the best free route — 4.7★ across more than 17,000 reviews, with over 1.2 million learners. In around eight hours, Yaakov Chaikin covers building real web pages with HTML and CSS plus JavaScript fundamentals and Ajax. It’s a gentle, university-quality on-ramp before you commit to a longer paid course.

Best for: total beginners who want to try web development free before paying.  Worth knowing: you can audit it free; the certificate needs a Coursera subscription. It covers HTML and CSS too, so it’s broader (and lighter on JS) than the dedicated picks above.

Enroll on Coursera (free audit) →

JavaScript courses compared

WHAT ABOUT JAVASCRIPT CERTIFICATIONS?

Honestly, JavaScript doesn’t have a single industry-standard certification the way cloud or networking do — employers hire on your code and portfolio far more than on a certificate. That said, a few credentials are worth knowing about:

• freeCodeCamp — JavaScript Algorithms and Data Structures: free, hands-on, and genuinely respected as proof you can write JavaScript. The best free option.
• Meta Front-End Developer (Coursera): a professional certificate that includes solid JavaScript, useful if you want a structured, name-brand credential.
• W3Schools JavaScript Certification: a paid exam-based certificate — recognisable, though lighter weight than the two above.

Our advice: take one of the courses above, build two or three real projects, and let the work be your credential. If you want a certificate on top, the free freeCodeCamp one is the most credible starting point.

Related courses

Frequently asked questions

What is the best JavaScript course?

For most people, Jonas Schmedtmann’s The Complete JavaScript Course on Udemy (4.7★, 26,000+ ratings) is the best — it’s the highest-rated, most project-driven course and takes you from beginner to advanced. If you already code and want to understand JavaScript deeply, Anthony Alicea’s Understanding the Weird Parts is the classic next step.

Which JavaScript certification is best?

There’s no single industry-standard JavaScript certification. The most credible is freeCodeCamp’s free JavaScript Algorithms and Data Structures certification, because it’s hands-on. Meta’s Front-End Developer certificate on Coursera is a solid name-brand option. In hiring, your projects and code matter more than any certificate.

Can you learn JavaScript for free?

Yes. You can audit Johns Hopkins’ HTML, CSS & JavaScript for Web Developers on Coursera free, and freeCodeCamp’s full JavaScript curriculum and certification are free. The paid Udemy courses are worth it for the depth and structure, but you can absolutely start at no cost.

How long does it take to learn JavaScript?

Expect a few weeks to get comfortable with the basics and a few months of consistent practice to become job-ready. A course like Schmedtmann’s runs around 70 hours; spread over evenings and weekends with your own projects alongside, most people reach a solid working level in three to six months.

Should I learn JavaScript before a framework like React?

Yes. React, Vue, and Angular are all built on JavaScript, and trying to learn them without solid JS fundamentals leads to constant confusion. Get comfortable with the language first — then move into our React courses when you’re ready.

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