DOM courses can help you learn how browsers interpret and structure web pages through the Document Object Model. You can build skills in selecting and modifying elements, handling events, and updating content dynamically. Many courses introduce tools such as JavaScript, browser dev tools, and debugging methods that support creating interactive and responsive web experiences.

Infosec
Skills you'll gain: Authentications, Application Security, Secure Coding, Serverless Computing, Cryptography, Risk Management Framework, Cloud Security, Threat Management, Infrastructure Security, Exploitation techniques, Package and Software Management, Node.JS, Web Applications, Javascript, Vulnerability Management, Cloud Services, Cloud Platforms, Web Development, Identity and Access Management, Dependency Analysis
Intermediate · Specialization · 1 - 3 Months

Illinois Tech
Skills you'll gain: Javascript and jQuery, jQuery, Responsive Web Design, Web Development, Version Control, Web Design, Cascading Style Sheets (CSS), Web Design and Development, Hypertext Markup Language (HTML), HTML and CSS, Web Frameworks, GitHub, Web Applications, Javascript, Web Development Tools, Git (Version Control System), Infrastructure Architecture, Network Architecture, Network Infrastructure, Browser Compatibility
Build toward a degree
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Marketing Effectiveness, Data-Driven Marketing, Digital Marketing Campaigns, Marketing Analytics, Marketing Channel, Campaign Management, Digital Marketing, Campaign Planning, Marketing Budgets, Performance Measurement, Digital Marketing Tools, Marketing, Brand Awareness, digital literacy, Communication Systems, Devops Tools, Communication
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cascading Style Sheets (CSS), HTML and CSS, Hypertext Markup Language (HTML), Cloud Hosting, Web Development, Cloud Deployment, Responsive Web Design, Web Design, Web Presence, Application Deployment, Typography, Servers, Javascript
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Vue.JS, Web Components, JavaScript Frameworks, UI Components, Code Reusability, Application Frameworks, Web Frameworks, Development Environment, Front-End Web Development, Event-Driven Programming, Web Applications, Android Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Figma (Design Software), Typography, Graphic and Visual Design, User Interface and User Experience (UI/UX) Design, User Interface (UI) Design, AI powered creativity, Collaborative Software, AI Workflows, Animations, Style Guides, Interactive Design, Layout Design, AI Integrations, Prototyping
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Bootstrap (Front-End Framework), Responsive Web Design, HTML and CSS, UI Components, Web Design and Development, Front-End Web Development, Cascading Style Sheets (CSS), Web Development, User Interface (UI)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Javascript, Software Design Patterns, Data Management, Data Structures, Web Development, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Test Driven Development (TDD), Unit Testing, Software Testing, Testability, Java, Test Case, Program Development, Software Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Python Programming, Computer Science
Intermediate · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Version Control, Hypertext Markup Language (HTML), GitHub, Git (Version Control System), HTML and CSS, Cascading Style Sheets (CSS), Web Design and Development, Web Development, Web Design, Software Versioning, Image Quality, Web Development Tools, Web Content, Front-End Web Development, Web Presence, Web Servers, Frontend Performance
Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Event-Driven Programming, Interactive Data Visualization, Java, Java Programming, Object Oriented Programming (OOP), User Interface (UI), Object Oriented Design, Computer Programming, User Interface (UI) Design, Algorithms, Software Engineering, Geospatial Mapping, Programming Principles, Software Documentation
Intermediate · Course · 1 - 3 Months