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.

Cisco Learning and Certifications
Skills you'll gain: Postman API Platform, Restful API, Authentications, Application Programming Interface (API), Scripting, JSON, Extensible Markup Language (XML), Network Protocols, YAML, Automation, Network Engineering, Python Programming
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Web Content Accessibility Guidelines, User Interface (UI), Usability, Web Design, Hypertext Markup Language (HTML), Front-End Web Development, UI Components, Semantic Web, Cascading Style Sheets (CSS), Javascript
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Restful API, Model View Controller, ASP.NET, OAuth, API Design, Web Development, Application Programming Interface (API), Web Services, Authentications, Unit Testing, Back-End Web Development, C# (Programming Language), Web Applications, Authorization (Computing), Data Access, Development Environment, Data Migration, Cloud Computing, Computer Programming, Data Validation
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Hypertext Markup Language (HTML), Web Design and Development, Browser Compatibility, Web Development, Cascading Style Sheets (CSS), Web Content, Microsoft Visual Studio, Integrated Development Environments
Beginner · Guided Project · Less Than 2 Hours
Codio
Skills you'll gain: OAuth, Web Development Tools, Authentications, Web Servers, Application Programming Interface (API), Cloud API, Restful API, Server Side, JSON, Software Documentation, Javascript, Web Services, Application Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: HTML and CSS, Figma (Design Software), Front-End Web Development, User Interface (UI), Responsive Web Design, Web Design and Development, Mockups, Web Design, Web Content Accessibility Guidelines, Prototyping, Javascript, Web Development
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: React Redux, React.js, Cascading Style Sheets (CSS), Web Components, JavaScript Frameworks, UI Components, HTML and CSS, Routing Protocols, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Application Programming Interface (API), Web Design, Restful API, Javascript, Web Development
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Database Design, Continuous Integration, Restful API, Docker (Software), Model View Controller, Front-End Web Development, Databases, User Story, CI/CD, Java, Java Programming, Database Application, Application Programming Interface (API), HTML and CSS, Full-Stack Web Development, Spring Boot, Microservices, Back-End Web Development, Software Design Documents, Software Architecture
Advanced · Course · 1 - 3 Months
Codio
Skills you'll gain: Apache Maven, JSON, JUnit, Java Programming, Java, Restful API, Integrated Development Environments, Programming Principles, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Pandas (Python Package), Scatter Plots, Histogram, Data Visualization, Data Manipulation, Data Import/Export, JSON, Data Cleansing, Data Visualization Software, Data Preprocessing, Exploratory Data Analysis, Data Analysis, Python Programming
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Restful API, Application Programming Interface (API), Node.JS, Software Documentation, Web Services, Middleware, Authentications, JSON, Web Frameworks, Server Side, Web Applications, Back-End Web Development, Authorization (Computing)
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: OpenAI API, OpenAI, Prompt Engineering, JSON, Application Programming Interface (API), Web Applications, Generative AI, LLM Application, Data Processing
Beginner · Guided Project · Less Than 2 Hours