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: Web Services, Restful API, Apache Maven, Spring Boot, Spring Framework, Gradle, Simple Object Access Protocol (SOAP), Java Platform Enterprise Edition (J2EE), Java, API Design, Application Frameworks, Secure Coding, Object-Relational Mapping, Data Persistence, JSON, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months

Microsoft
Skills you'll gain: ASP.NET, .NET Framework, Responsive Web Design, HTML and CSS, C# (Programming Language), Web Applications, Web Development, Javascript and jQuery, UI Components, Application Frameworks, Bootstrap (Front-End Framework), Development Environment, Restful API, Microsoft Development Tools, React Redux, Model View Controller, Middleware
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Spring Boot, React.js, Object-Relational Mapping, Restful API, YAML, Data Access, Web Applications, Databases, Application Performance Management, Full-Stack Web Development, Configuration Management, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Node.JS, Full-Stack Web Development, Authentications, Server Side, Back-End Web Development, Restful API, Middleware, Database Application, Data Validation, TypeScript, Application Programming Interface (API), Object-Relational Mapping, MongoDB, Databases, MySQL
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Vue.JS, Application Deployment, JavaScript Frameworks, Application Design, User Interface (UI), Frontend Performance, Web Analytics and SEO, Android Development, Server Side, Data Management
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React.js, Performance Tuning, Frontend Performance, Front-End Web Development, Application Performance Management
Advanced · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Responsive Web Design, Cloud Deployment, Web Design, Database Systems, Front-End Web Development, Application Programming Interface (API), Full-Stack Web Development, Amazon Web Services, Cloud Computing, Authentications, Development Environment, Web Applications, Frontend Performance, Continuous Deployment, Continuous Integration, JavaScript Frameworks, Web Development, Web Servers, Usability, Mobile Development
Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Web Applications, Application Development, Web Development, Leaflet (Software), React.js, UI Components, User Interface (UI), Application Deployment, Cloud Deployment, JavaScript Frameworks, OAuth, User Accounts, Authentications, Front-End Web Development, Development Environment, User Interface and User Experience (UI/UX) Design, Secure Coding, Responsive Web Design, Javascript, Software Installation
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Extract, Transform, Load, Data Integration, SQL Server Integration Services (SSIS), Data Cleansing, Data Pipelines, Data Quality, Data Migration, Database Management, Data Transformation, File Management, Data Manipulation, Data Processing, Metadata Management, JSON, Extensible Markup Language (XML), Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Visualization, Data Visualization Software, Data Presentation, Interactive Data Visualization, Data Literacy, Visualization (Computer Graphics), Javascript, Data Analysis, Microsoft Visual Studio
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Software Design Patterns, Computational Thinking, Software Design, Algorithms, Program Development, Software Development, Data Structures, Problem Solving, Computer Science, Machine Learning Methods
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Development, Microsoft Azure, Virtual Machines, Cloud Management, Infrastructure As A Service (IaaS), Virtualization, Application Deployment, Linux Administration, Linux, Web Applications, Node.JS, Javascript, MongoDB
Intermediate · Course · 1 - 3 Months