JavaScript Roadmap
JavaScript is the only language that runs everywhere — browser, server, mobile, and desktop. This roadmap takes you from beginner to professional JavaScript developer.
Phase 1: Phase 1 — Core JavaScript
Variables & Scope
var, let, const, and how JavaScript manages variable scope.
Functions
Function declarations, expressions, arrow functions, and closures.
Arrays & Objects
Work with collections of data and understand JavaScript's object model.
DOM & Events
Select and modify HTML elements, handle user events, and build interactive pages.
Phase 2: Phase 2 — Modern JavaScript
ES6+ Syntax
Destructuring, spread, template literals, optional chaining, and nullish coalescing.
Async Programming
Callbacks, Promises, async/await, and the JavaScript event loop.
Modules
ES modules, import/export, and how JavaScript code is organized at scale.
Error Handling
try/catch, custom errors, and building resilient JavaScript applications.
Phase 3: Phase 3 — React & Frontend
React Basics
JSX, components, props, state, and thinking in React.
React Hooks
useState, useEffect, useRef, useContext, and custom hooks.
TypeScript
Add static types to JavaScript for safer, more maintainable code.
Phase 4: Phase 4 — Node.js & Backend
Node.js Core
File system, streams, HTTP module, and Node.js event-driven architecture.
Express.js
Build REST APIs, handle routing, middleware, and authentication.
Databases with JS
Connect to PostgreSQL or MongoDB using Prisma, Mongoose, or pg.