JavaScript for Beginners

JavaScript24 lessons6 hr 27 min

Start JavaScript from zero: run it in the console, work with values and functions, organise data with arrays and objects, then touch the browser and fetch real JSON.

Modules

Lessons open in reading order. Each one is a public page.

Language foundations

4 lessons

Values, variables, scope, types and operators, the pieces every later JavaScript topic uses.

Control flow and functions

4 lessons

Branch on conditions, repeat work with loops, and package behaviour in functions, callbacks and closures.

Objects, arrays and data

4 lessons

Model data with objects and arrays, transform lists with map, filter and reduce, and move data with destructuring, spread and JSON.

DOM and events

4 lessons

Read and update the page, handle events and forms, and build a small interactive task list project.

Async JavaScript

4 lessons

Timers, callbacks, promises, async and await, and fetching JSON from an API without blocking the page.

Projects and patterns

4 lessons

ES modules, browser storage, a persisted todo app, an API dashboard project, debugging, testing and a capstone brief.