JavaScript Fundamentals

Modern JavaScript for the browser: syntax, the DOM, events, fetch, modules and async code.

Beginner 7 modules about 16 h Free
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  1. 1 JavaScript in the Browser: Getting Started Where JavaScript runs, how to add it to a page, and using the browser console. 20 min
  2. 2 Values, Variables and Operators let and const, primitive types, type coercion pitfalls, strings and template literals. 30 min
  3. 3 Functions, Arrays and Objects Function syntax, arrays with map/filter/reduce, objects, destructuring and spread. 40 min
  4. 4 The DOM: Changing the Page Select elements, change text and classes, create elements safely and avoid XSS. 35 min
  5. 5 Events and Forms Listen for clicks, input and submit, use event delegation and validate forms. 35 min
  6. 6 Asynchronous JavaScript and fetch Promises, async/await, calling APIs with fetch, handling errors and sending CSRF tokens. 40 min
  7. 7 Storage, Classes and a Complete Mini App localStorage, classes, organising code into modules, and building a full project. 45 min