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: Extensible Markup Language (XML), Ajax, Extensible Languages and XML, Web Design, Java Platform Enterprise Edition (J2EE), Data Validation, Web Applications, Scripting, Javascript and jQuery, Web Development, Android Development, Hypertext Markup Language (HTML), Middleware, Model View Controller, Hibernate (Java), Visualization (Computer Graphics), Interoperability, Java, Cascading Style Sheets (CSS), Mobile Development
Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Application Deployment, Continuous Deployment, Web Development Tools, Continuous Delivery, Release Management, React.js, Vue.JS, Code Review
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Spring Boot, API Design, Application Programming Interface (API), Spring Framework, JSON, Object-Relational Mapping, Business Logic, Integration Testing, Data Modeling, Server Side, Software Architecture, Data Persistence, Data Access
Mixed · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Relational Databases, Databases, Data Visualization Software, Web Scraping, Data Science, Scatter Plots, Data Manipulation, SQL, Data Processing, JSON, Application Programming Interface (API), Data Import/Export, Python Programming, Extensible Markup Language (XML), Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Serverless Computing, JSON, Cloud API, Cloud Development, Microsoft Azure, C# (Programming Language), Cloud Applications, Application Programming Interface (API), Restful API, Cloud Deployment, Web Services, Cloud Computing
Intermediate · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: JavaScript Frameworks, Application Programming Interface (API), Property Management Systems, React.js, Authentications, OAuth, Server Side, Frontend Integration, Databases, Cloud Hosting, Image Quality, User Interface (UI), Application Deployment
Intermediate · Course · 1 - 3 Months
Skills you'll gain: JUnit, Test Automation, Test Tools, Unit Testing, Software Testing, Continuous Integration, Performance Testing, Selenium (Software), Quality Assurance, Integration Testing, Test Case, User Acceptance Testing (UAT), IT Automation, Scripting, Debugging, Network Performance Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Unit Testing, Go (Programming Language), Restful API, Authentications, Application Programming Interface (API), Secure Coding, API Design, Application Security, Software Testing, Microservices, Authorization (Computing), Database Development, Web Servers, Server Side, Databases, Software Architecture, JSON, Role-Based Access Control (RBAC), Maintainability, Software Design Patterns
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Import/Export, Data Visualization Software, Data Visualization, Interactive Data Visualization, Histogram, Data Transformation, Data Processing, Apache Kafka, JSON, MySQL, SQL
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cascading Style Sheets (CSS), HTML and CSS, Color Theory, Javascript, Web Design and Development, Front-End Web Development, UI Components, Web Development, Data Validation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, Restful API, Authentications, Test Automation, Test Script Development, Test Case, Java, JSON
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Data Persistence, JSON, User Interface (UI), User Interface and User Experience (UI/UX) Design, Databases, Interactive Data Visualization, Debugging, Database Management, Application Development, Mobile Development, Real Time Data, Application Programming Interface (API), Data Management
Intermediate · Course · 1 - 4 Weeks