JavaScript Essentials
Free Beginner course · 12 lessons · 4 weeks · Certificate on completion
Master the language of the web. Variables, functions, async, DOM — the foundation every web dev needs. Across 12 lessons you'll move from fundamentals to a portfolio-ready outcome — at your own pace, with quizzes after each lesson and a final exam to certify your mastery.
What you'll learn
- Values, types, and operators
- Control flow and functions
- Arrays and objects
- DOM manipulation
- Events and forms
- Promises and async/await
Skills you'll pick up
- Values, types, and operators
- Control flow and functions
- Arrays and objects
- DOM manipulation
- Events and forms
- Promises and async/await
Tools covered
- JavaScript
- Real-world projects
- Quizzes
- Final exam
Course modules
Module 1: Values, types, and operators
Module 1 of JavaScript Essentials. 3 lessons · 3h
Module 2: Control flow and functions
Module 2 of JavaScript Essentials. 3 lessons · 3h
Module 3: Arrays and objects
Module 3 of JavaScript Essentials. 3 lessons · 3h
Module 4: DOM manipulation
Module 4 of JavaScript Essentials. 3 lessons · 3h
Lessons in this course
- Values, types, and operators
- Control flow and functions
- Arrays and objects
- DOM manipulation
- Events and forms
- Promises and async/await
- Modules and tooling
- Build an interactive widget
- JavaScript: Deep dive 9
- JavaScript: Deep dive 10
- JavaScript: Deep dive 11
- JavaScript: Deep dive 12
Instructor
Ethan Walker — Senior Frontend Engineer
Ethan Walker is a Senior Frontend Engineer with years of hands-on experience teaching JavaScript to thousands of learners worldwide.
Certificate
Finish every lesson and pass the final exam to earn a free, verifiable Learnera certificate for JavaScript Essentials. It can be downloaded as a PDF and shared on LinkedIn.
Career outcomes
Median global salary $110,000 per year · median India salary ₹15,00,000 per year · 136,248 open roles worldwide
- JavaScript Specialist
- Senior JavaScript Lead
- JavaScript Consultant
Frequently asked questions
Is the JavaScript Essentials course free?
Yes. Every Learnera course, including JavaScript Essentials, is completely free — lessons, quizzes, the final exam, and the certificate.
How long does JavaScript Essentials take?
12 lessons, typically completed in 4 weeks at a comfortable pace.
Do I get a certificate?
Yes — pass the final exam and you receive a free, verifiable certificate you can share on LinkedIn.