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: Data Visualization Software, Data Visualization, Interactive Data Visualization, Visualization (Computer Graphics), JSON, Data Mapping, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: User Accounts, Real Time Data, Authentications, Frontend Integration, Cloud Applications, Application Development, Serverless Computing, Application Security, Web Applications, Data Management, Data Storage, Cloud Security
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Restful API, ASP.NET, Microsoft SQL Servers, C# (Programming Language), Web Services, Database Management, JSON, SQL, Database Design, Server Side, Object Oriented Programming (OOP), API Design, Programming Principles
Intermediate · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Web Frameworks, Restful API, Application Programming Interface (API), API Testing, Application Deployment, Software Documentation, Package and Software Management, JSON, Application Development, Server Side, Python Programming, Data Validation
Intermediate · Guided Project · Less Than 2 Hours

Microsoft
Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), Data Persistence, Event-Driven Programming, HTML and CSS, Web Applications, Front-End Web Development, Semantic Web, Javascript, Web Content Accessibility Guidelines, Data Storage Technologies, Application Security, User Interface (UI), Data Validation
Beginner · Course · 1 - 3 Months

Skills you'll gain: GitHub, Git (Version Control System), Version Control, Unix Commands, Unix Shell, Software Versioning, Linux Commands, Command-Line Interface, Devops Tools, Collaborative Software, Code Review, Software Configuration Management, Software Development Tools, Secure Coding, File Management, Technical Documentation, Software Documentation
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Frontend Integration, Web Components, JavaScript Frameworks, Microarchitecture, Web Development Tools, Front-End Web Development, CI/CD, Web Design, Secure Coding, Software Design, Scalability, Server Side, Maintainability, Debugging
Intermediate · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Containerization, CI/CD, Docker (Software), DevOps, Jenkins, Application Deployment, Rust (Programming Language), Prometheus (Software), System Monitoring, JSON, Scripting, Command-Line Interface, Continuous Monitoring, Automation, System Programming, Software Testing, GitHub
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Javascript, Web Design, Web Design and Development, Event-Driven Programming, Development Environment, Web Development, User Interface and User Experience (UI/UX) Design, Web Applications, Interactive Design, Animations, Typography, Color Theory, Web Analytics and SEO, Debugging, Data Validation
Beginner · Specialization · 1 - 3 Months

Scrimba
Skills you'll gain: Anthropic Claude, OpenAI API, Prompt Engineering, LLM Application, Generative AI, Large Language Modeling, Multimodal Prompts, Artificial Intelligence, Responsible AI, Cloud Deployment, Restful API, API Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Postman API Platform, Application Programming Interface (API), Software Testing, Restful API, Development Environment, Collaborative Software, Web Applications, JSON, Data Import/Export, Authentications
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Network Analysis, Unsupervised Learning, Social Network Analysis, Supervised Learning, Unstructured Data, Marketing Analytics, Deep Learning, Scikit Learn (Machine Learning Library), Machine Learning, Tensorflow, Machine Learning Methods, Text Mining, Data Analysis, Model Evaluation, Transfer Learning, Predictive Modeling, Semantic Web, JSON, Statistical Methods, Data Manipulation
Build toward a degree
Beginner · Specialization · 3 - 6 Months