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.

Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Web Design and Development, Cascading Style Sheets (CSS), UI Components, Front-End Web Development, User Interface (UI) Design, User Interface (UI), Browser Compatibility, Frontend Integration, Javascript, Interactive Design, Hypertext Markup Language (HTML), Cross Platform Development
Intermediate · Guided Project · Less Than 2 Hours

University of California, Davis
Skills you'll gain: Open Web Application Security Project (OWASP), Authentications, Exploit development, Penetration Testing, Security Strategy, Security Testing, Application Security, Vulnerability Assessments, Code Review, Vulnerability Management, Secure Coding, Authorization (Computing), Exploitation techniques, Java, Security Controls, Java Programming, Patch Management, Dependency Analysis, Docker (Software), JSON
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Android Development, Kotlin, API Design, Android Studio, Application Programming Interface (API), Android Jetpack, Mobile Development, Database Application, Data Persistence, Database Management, Databases, JSON, Database Development, Web Applications, Back-End Web Development, SQL, Data Access, Relational Databases
Intermediate · Course · 1 - 3 Months

Meta
Skills you'll gain: Restful API, SQL, React Native, Database Management, Databases, Application Programming Interface (API), API Design, Relational Databases, Data Persistence, Mobile Development, Data Storage Technologies, Data Management, Application Development, Authentications
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Bootstrap (Front-End Framework), Web Design and Development, Web Development, Web Applications, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Browser Compatibility, User Interface and User Experience (UI/UX) Design, User Experience Design, Requirements Analysis, Requirements Elicitation, Client Services, Javascript
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Algorithms, Javascript, Data Structures, Theoretical Computer Science, Computational Thinking, Programming Principles, Performance Tuning, Debugging
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: TypeScript, Web Development Tools, React.js, Server Side, Javascript, Data Structures, Web Development, Programming Principles, Middleware, Scalability, Web Design, Computer Programming, Maintainability, UI Components
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Webpack, Frontend Performance, Search Engine Optimization, Web Development Tools, Web Analytics and SEO, Performance Tuning, Build Tools, Debugging, Usability Testing, Web Development, Software Testing, Test Tools, Front-End Web Development, Functional Testing, Test Automation, Continuous Monitoring, Development Testing, Computer Programming Tools, JavaScript Frameworks, WordPress
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Restful API, ASP.NET, Model View Controller, .NET Framework, JSON, Application Programming Interface (API), API Design, Application Frameworks, Web Services, Middleware, Back-End Web Development, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Web Development, Flask (Web Framework), Restful API, Cloud Deployment, Selenium (Software), Front-End Web Development, Web Applications, Full-Stack Web Development, Secure Coding, Web Design and Development, Object-Relational Mapping, JavaScript Frameworks, Application Security, Test Tools, Cloud Applications, HTML and CSS, Back-End Web Development, Databases, Application Programming Interface (API), Collaboration
Beginner · Course · 1 - 3 Months

Skills you'll gain: Hypertext Markup Language (HTML), Frontend Performance, HTML and CSS, Web Applications, Javascript, Performance Tuning, Software Development
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: GitHub, Responsive Web Design, React.js, Front-End Web Development, Git (Version Control System), HTML and CSS, Version Control, Hypertext Markup Language (HTML), Web Development, Web Design and Development, Back-End Web Development, Frontend Integration, Web Design, UI Components, Code Review, Web Applications, Cascading Style Sheets (CSS), Web Analytics and SEO, Database Development, Software Development
Advanced · Course · 1 - 3 Months