Interactive lessons and hands-on exercises to take you from beginner to confident developer.
Structure and semantics of web pages
Styling, layout, and responsive design
Interactivity, logic, and APIs
Modern component-based UIs
Server-side JavaScript
Git, terminal, and workflow
Deoit is a free, browser-based platform that combines a powerful code editor with 81+ interactive lessons. Whether you're a complete beginner or looking to expand your skills, our structured courses take you from zero to confident developer.
Master the building blocks of every website. Learn elements, attributes, forms, tables, semantic HTML5, accessibility, and SEO best practices across 20 comprehensive lessons.
Start Learning HTML →Transform plain HTML into beautiful designs. Master the box model, Flexbox, CSS Grid, responsive design with media queries, animations, variables, and modern typography in 17 lessons.
Start Learning CSS →Make your pages interactive and dynamic. Learn variables, functions, DOM manipulation, events, async/await, fetch API, classes, modules, and closures in 20 in-depth lessons.
Start Learning JavaScript →Build modern, component-based interfaces used by Meta, Netflix, and Airbnb. Learn JSX, components, props, state, hooks, routing, forms, and custom hooks in 12 lessons.
Start Learning React →Run JavaScript on the server. Learn npm, Express.js, REST APIs, file system operations, and middleware in 6 practical lessons.
Start Learning Node.js →Master the essential developer tools: Git version control, GitHub, terminal commands, package managers, and VS Code shortcuts in 6 lessons.
Start Learning Tools →Yes! Deoit is 100% free. No signup required. You get a full code editor with HTML, CSS, and JavaScript support, plus 81+ free web development lessons.
Absolutely. Deoit offers 81+ structured lessons covering HTML, CSS, JavaScript, React, Node.js, and developer tools. Each lesson includes code examples you can practice directly in the browser.
Start with HTML (structure), then CSS (styling), then JavaScript (interactivity). After that, learn React for modern UIs and Node.js for backend. Don't forget Git along the way.
No. Deoit runs entirely in your browser. No downloads, no installation. Just open the editor and start coding.
81+ lessons: 20 HTML, 17 CSS, 20 JavaScript, 12 React, 6 Node.js, and 6 developer tools lessons. New content is added regularly.