JavaScript Foundations for MERN

Variables, Types and Scope

Reading

Arrow Functions and Destructuring

Reading

Promises and async/await

Reading

Modules, imports and exports

Reading

Closures and scope chain

Reading

Practice — async data fetch utility

Exercise

DOM selection and traversal

Reading

Events and event delegation

Reading

Fetch API and JSON handling

Reading

LocalStorage, SessionStorage and cookies

Reading

IntersectionObserver and MutationObserver

Reading

Practice — build an interactive to-do UI

Exercise

The event loop

Reading

File system and path

Reading

npm, package.json, and scripts

Reading

Environment variables with dotenv

Reading

CommonJS vs ES Modules

Reading

Practice — CLI utility script

Exercise

Arrays, objects, and iteration

Reading

Map, filter, and reduce

Reading

Classes and prototypes

Reading

Error handling and custom errors

Reading

Functional patterns — composition and currying

Reading

Practice — data transformation pipeline

Exercise

VS Code, ESLint, and Prettier

Reading

Git basics

Reading

Debugging with Node inspector

Reading

Testing with Jest

Reading

Bundling — Vite intro

Reading

Practice — publish a tested npm utility

Exercise

Project brief and architecture

Reading

Practice — build a CLI task manager

Exercise

Practice — add file persistence with JSON

Exercise

Practice — write unit tests with Jest

Exercise

Code review checklist and refactor

Reading

Capstone — submit your project

Project