React JS courses can help you learn component-based architecture, state management, and routing. You can build skills in creating interactive user interfaces, optimizing performance, and managing application state with tools like Redux. Many courses also cover testing frameworks such as Jest and React Testing Library, enabling you to ensure your applications are robust and reliable.

Scrimba
Skills you'll gain: Prompt Engineering, Responsive Web Design, Node.JS, Command-Line Interface, TypeScript, Unit Testing, SQL, HTML and CSS, Web Content Accessibility Guidelines, Typography, Cascading Style Sheets (CSS), Ajax, React.js, User Interface and User Experience (UI/UX) Design, Hypertext Markup Language (HTML), JavaScript Frameworks, JSON, Generative AI, Database Design, UI Components
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Bootstrap (Front-End Framework), Debugging, UI Components, Front-End Web Development, Semantic Web, Hypertext Markup Language (HTML), Browser Compatibility, Web Content Accessibility Guidelines, Web Analytics and SEO, User Interface (UI), Development Testing, Data Validation, Javascript, Animations
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: PHP (Scripting Language), MySQL, WordPress, Web Applications, Application Programming Interface (API), Web Development, Content Management Systems, Restful API, DevOps, Linux, Full-Stack Web Development, Data Store, Command-Line Interface, Back-End Web Development, Server Side, Secure Coding, Scripting, Database Management, SQL, Javascript
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: HTML and CSS, React.js, ASP.NET, Restful API, .NET Framework, Web Applications, Web Services, Front-End Web Development, JSON, Application Development, Model View Controller, Program Development, Javascript, Development Environment, Back-End Web Development, API Design, Web Development, Microsoft Visual Studio, Software Design Patterns, Cascading Style Sheets (CSS)
Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Agentic systems, Systems Architecture, API Design, Maintainability, Systems Design, Solution Architecture
Intermediate · Course · 1 - 4 Weeks
University of Pennsylvania
Skills you'll gain: Active Listening, Communication, Communication Strategies, Persuasive Communication, Verbal Communication Skills, Interpersonal Communications, Business Communication, Strategic Communication, Trustworthiness, Rapport Building, Goal Setting, Relationship Building, Non-Verbal Communication, Cooperation, Negotiation, Competitive Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, HTML and CSS, Event-Driven Programming, UI Components, Javascript, Interactive Design, Animations, Application Programming Interface (API), User Interface and User Experience (UI/UX) Design, Real Time Data, Data Persistence
Intermediate · Course · 1 - 3 Months

Skills you'll gain: API Testing, React.js, Authentications, Containerization, OAuth, Cloud Deployment, Back-End Web Development, PostgreSQL, API Gateway, Software Documentation, Amazon Web Services, Cloud Applications, Event-Driven Programming, Front-End Web Development, Python Programming, Database Management, Restful API, SQL, API Design, Databases
Intermediate · Specialization · 3 - 6 Months

AI CERTs
Skills you'll gain: Generative AI Agents, Agentic systems, Game Design, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Video Game Development, Animation and Game Design, Generative AI, Game Theory, Design, Design and Product
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Stress Management, Mindfulness, Emotional Intelligence, Personal Development, Resilience, Self-Awareness, Persistence, Mental Health, Goal Setting, Adaptability, Journals, Accountability
Beginner · Course · 1 - 4 Weeks

Meta
Skills you'll gain: Restful API, SQL, React Native, Databases, Data Persistence, Mobile Development, Data Storage Technologies, JSON, Data Management, Network Model, Application Development, Authentications
Intermediate · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Environmental Social And Corporate Governance (ESG), Risk Analysis, Risk Management, Case Studies, Stakeholder Engagement, Business Risk Management, Stakeholder Management, Corporate Sustainability, Investment Management, Portfolio Management, Environmental Management Systems, Investments, Financial Analysis, Sustainable Business, Governance, Performance Measurement
Beginner · Course · 1 - 4 Weeks