JavaScript courses can help you learn programming fundamentals, DOM manipulation, asynchronous programming, and event-driven development. You can build skills in debugging, working with APIs, and creating interactive web applications. Many courses introduce tools like Node.js for server-side development, React for building user interfaces, and Git for version control, showing how these skills come together in real-world projects.

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Application Programming Interface (API), Web Applications, Secure Coding, Application Security
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Web Applications, React.js, Javascript and jQuery, Javascript, Cascading Style Sheets (CSS)
Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Unsupervised Learning, Unstructured Data, Marketing Analytics, Text Mining, Deep Learning, Model Evaluation, Machine Learning, JSON, Data Processing, Natural Language Processing, Data Preprocessing, Model Training, Python Programming
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: TypeScript, Code Reusability, React.js, Javascript, Software Design Patterns
Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), File I/O, Program Development, Software Development, Automation, Data Structures, Code Reusability, Maintainability, File Management, Python Programming, Scalability, Scripting Languages, Data Persistence, JSON
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Automation, Test Script Development, Software Testing, Javascript, Browser Compatibility, Scripting, Automation, Web Development Tools, Test Tools, Test Case, Cascading Style Sheets (CSS), File I/O, Software Installation
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: AI Security, Open Web Application Security Project (OWASP), Exploitation techniques, Server Side, Application Security, Artificial Intelligence and Machine Learning (AI/ML), Responsible AI, Data Security, LLM Application, Cyber Attacks, Security Awareness, Generative AI, Large Language Modeling, Generative AI Agents, Prompt Engineering
Build toward a degree
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Browser Compatibility, Java Programming, Java, Test Tools, Software Testing, Javascript, Eclipse (Software), Apache Maven, Development Environment, Object Oriented Programming (OOP), Cascading Style Sheets (CSS), Software Installation, System Configuration
Intermediate · Course · 3 - 6 Months

Microsoft
Skills you'll gain: ASP.NET, .NET Framework, Responsive Web Design, jQuery, HTML and CSS, JavaScript Frameworks, Web Applications, Frontend Integration, Web Development, Javascript and jQuery, UI Components, Bootstrap (Front-End Framework), Development Environment, Cascading Style Sheets (CSS), Restful API, Microsoft Visual Studio, Microsoft Development Tools, React Redux, Application Programming Interface (API), Model View Controller
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Web Components, React.js, Node.JS, JavaScript Frameworks, Web Development Tools, Frontend Performance, Front-End Web Development, Web Content, Web Development, HTML and CSS, Software Engineering
Intermediate · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: React.js, Code Reusability, UI Components, Maintainability, Javascript, Software Design Patterns, Programming Principles, Context Management
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Cascading Style Sheets (CSS), Web Design, Web Design and Development, UI Components, Web Language, Front-End Web Development, Mobile Development, Javascript, Animations, User Interface (UI), Web Development Tools, Web Content Accessibility Guidelines, Typography, Semantic Web, GitHub, Version Control, Application Deployment, Development Environment
Beginner · Specialization · 3 - 6 Months