Language

JavaScript — Making Pages Interactive

The programming language of the web. Add logic, interactivity and live data to your pages — and the language behind the entire MERN stack.

46 lessons12 chaptersStart: What is JavaScript? →

1JavaScript Basics

What is JavaScript?30 min Where to Put JavaScript30 min Variables: let, const & var40 min Data Types35 min

2Operators & Logic

Operators35 min Conditions: if, else & Comparisons40 min Switch & the Ternary Operator30 min

3Loops

Loops: for & while40 min Looping Over Arrays30 min

4Functions

Functions45 min Arrow Functions30 min Scope25 min

5Strings, Numbers & Math

Strings & Template Literals35 min String Methods30 min Numbers & Math30 min

6Arrays & Objects

Arrays40 min Array Methods: map, filter & reduce45 min Objects40 min JSON30 min

7The DOM & Events

The DOM: Finding Elements40 min Changing the Page40 min Events & addEventListener40 min Handling Forms35 min The Event Object, Bubbling & Delegation40 min Web Storage: localStorage & sessionStorage35 min

8Modern JS & Async

Modern JavaScript (ES6+)40 min Modern Operators: Rest, Optional Chaining, Nullish & Map/Set45 min Modules: import & export30 min Asynchronous JavaScript45 min Promises in Depth: then, catch & Promise.all45 min Fetching Data from an API45 min

9Errors & Good Practice

Errors, try/catch & Debugging35 min JavaScript Best Practices25 min

10Going Deeper

How JavaScript Works: Call Stack, Hoisting & the Event Loop50 min Closures45 min The this Keyword & call / apply / bind45 min Object-Oriented JavaScript: Prototypes, Classes & Inheritance55 min Recursion40 min Higher-Order Functions & Functional Thinking45 min Regular Expressions (RegExp)40 min Performance Patterns: Debouncing & Throttling40 min

11Professional Workflow

Modern Tooling: npm, Vite & Babel40 min Automated Testing with Jest45 min

12Projects

Project: Interactive To-Do List120 min Project: Quiz App120 min Project: Live Data App (API)150 min