The Complete JavaScript Course 2025: From Zero to Expert!
The modern JavaScript course for everyone! Master JavaScript with projects, challenges and theory. Many courses in one!

What you will learn
Become an advanced, confident, and modern JavaScript developer from scratch
Build 6 beautiful real-world projects for your portfolio (not boring toy apps)
Become job-ready by understanding how JavaScript really works behind the scenes
How to think and work like a developer: problem-solving, researching, workflows
JavaScript fundamentals: variables, if/else, operators, boolean logic, functions, arrays, objects, loops, strings, etc.
Modern ES6+ from the beginning: arrow functions, destructuring, spread operator, optional chaining (ES2020), etc.
Modern OOP: Classes, constructors, prototypal inheritance, encapsulation, etc.
Complex concepts like the 'this' keyword, higher-order functions, closures, etc.
Asynchronous JavaScript: Event loop, promises, async/await, AJAX calls and APIs
How to architect your code using flowcharts and common patterns
Modern tools for 2022 and beyond: NPM, Parcel, Babel and ES6 modules
Practice your skills with 50+ challenges and assignments (solutions included)
Get fast and friendly support in the Q&A area
Course pathways: design your unique learning path according to your goals!
Why take this course?
🌟 The Complete JavaScript Course 2024: From Zero to Expert! 🌟
Course Headline:
🏆 The modern JavaScript course for everyone! Master JavaScript with projects, challenges, and theory. Many courses in one!
Why You Should Choose This Course:
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All-in-One Experience: 📚 This is the most complete and in-depth JavaScript course on Udemy (and maybe the entire internet!). It's an all-in-one package that will take you from the very basics to building modern applications.
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Learn at Your Own Pace: 🎯 With beginner, intermediate, advanced, and expert topics covered, you can become an excellent developer by watching only parts of the course. The curriculum is designed to guide you through efficiently.
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Real-World Skills: 🛠 By the end of the course, you'll have practical knowledge and confidence to ace your job interviews and succeed as a professional developer.
Your Instructor: Jonas Schmedtmann
Jonas is an experienced web developer and designer, Udemy's top instructor, and has been teaching this bestselling course since 2016. He understands exactly how students learn JavaScript and has tailored the curriculum to ensure a comprehensive understanding from scratch.
What You Will Learn:
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Build Real-World Projects: 🏗️ Complete five beautiful projects for your portfolio, learning to plan applications using flowcharts and common JavaScript patterns.
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Master JavaScript Fundamentals: 📊 Get comfortable with variables, conditionals, loops, strings, and more.
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Modern JavaScript (ES6+): 🚀 Dive into arrow functions, destructuring, spread operator, default arguments, optional chaining, and beyond.
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Understand the JavaScript Engine: 🧠 Learn how JavaScript engines work, the call stack, hoisting, scoping, 'this' keyword, reference values, and more.
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Deep Dives into Functions and OOP: 🔍 Explore functions, arrow functions, first-class and higher-order functions, bind, closures, prototypal inheritance, constructor functions (ES5), classes (ES6), and object-oriented programming concepts like encapsulation, abstraction, inheritance, and polymorphism.
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Asynchronous JavaScript: ⏱ Master the event loop, promises, async/await, and error handling to work with third-party APIs via AJAX calls.
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Modern Development Tools: 🛠 Get familiar with NPM, Parcel, Babel, and ES6 modules.
What's Included in the Course:
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Up-to-date HD Videos: 🎥 Easily searchable and perfect for reference, especially for Udemy Business learners.
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Professional Captions: 📯 No auto-generated captions here—these are the real deal!
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Starter & Final Code: 🖥️ Downloadable code to get you started and ensure you're on track.
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Slides for Theory Videos: 📊 Over 40 sets of slides to accompany the theory lessons.
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Coding Challenges & Assignments: 🧩 Over 25 challenges and assignments to help you practice your new skills effectively.
Is This Course For You?
If you're looking to understand JavaScript inside and out, from the basics to advanced concepts, or if you want to become a professional web developer with hands-on experience, this is the course for you. Join Jonas and over 850,000 developers who have transformed their skills with this comprehensive course!
📆 Start your JavaScript journey today and unlock the full potential of modern web development!
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Our review
🌟 Course Overview:
Jonas Schemedtmann's JavaScript Course is a comprehensive learning experience that has received high praise from students across various skill levels. With a total of 68.5 hours of video content, this course offers an in-depth exploration of modern JavaScript features and advanced projects. The course structure is designed to take learners from the basics to mastery with clarity and precision, making it a favorite among many.
Pros:
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Detailed Explanations: Jonas' teaching style is engaging and clear, which is highly appreciated by learners of all levels. His ability to explain complex concepts in an accessible manner is a standout feature of this course.
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Practical Application: The course does not just focus on theory but also provides advanced projects that allow students to apply their knowledge effectively. This balance ensures a deep understanding of JavaScript.
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Up-to-Date Content: The course is regularly updated to include modern JavaScript features, making it highly relevant for developers looking to stay current with the latest trends and technologies.
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Structured Learning Path: The course progression from fundamental concepts to advanced topics is well-structured and logical, facilitating a smooth learning experience.
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Engaging Pace: The pace of the course is comfortable, allowing learners to absorb information without feeling rushed, which contributes to a more thorough comprehension.
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Recommended for Various Levels: Suitable for beginners as well as experienced developers who wish to upgrade their skills, this course is a versatile tool in one's learning arsenal.
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Didactic Excellence: Jonas' didactic skills are commended by students, with many noting that his teaching approach feels similar to a classroom experience.
Cons:
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Not All Beginner-Friendly: Some reviews suggest that the course, although excellent, may not be tailored for beginners or those with prior knowledge looking for more advanced content.
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Language Considerations: Jonas' communication style is slow and clear, which some students find beneficial, especially if English is not their first language. However, others might prefer different teaching aids like written transcripts.
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Market Competition: As this course is highly effective, it may lead to increased competition in the job market for those who complete it.
Learner Feedback:
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The course is highly recommended and described as "the number 1 JavaScript course" due to its comprehensive nature and practical exercises.
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Many learners report that this course has exceeded their expectations, especially beginners who find it easy to follow and understand the concepts.
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The projects included in the course are made with love and add significant value to the learning experience.
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Jonas is often praised for his exceptional teaching abilities and the legacy he's creating with his courses.
Conclusion:
Jonas Schemedtmann's JavaScript Course is a top-rated educational resource that has received widespread acclaim for its quality, detail, and effectiveness in teaching JavaScript. It is suitable for beginners to advanced developers who are looking for a course that offers both theoretical knowledge and practical experience. The course's only drawbacks are its potential lack of focus on beginner-level content and the possibility of entering a more competitive job market upon completion. Overall, this course is an excellent investment for anyone aiming to deepen their understanding of JavaScript and become a master developer in the field.