Resources for Developers,
by Developers

Documenting CSS, HTML, and JavaScript, since 2005.

Featured articles

Blog
JavaScript Temporal is coming

A new way to handle dates and times is being added to JavaScript. Let's take a look at Temporal, what problems it solves, the current state, and what you'll find in the new documentation about it on MDN.
CSS
CSS anchor positioning

The CSS anchor positioning module defines features that allow you to tether elements together. Certain elements are defined as anchor elements; anchor-positioned elements can then have their size and position set based on the size and location of the anchor elements to which they are bound.
Web APIs
Using the View Transition API

This article explains the theory behind how the View Transition API works, how to create view transitions and customize the transition animations, and how to manipulate active view transitions. This covers view transitions for both DOM state updates in a single-page app (SPA), and navigating between documents in a multi-page app (MPA).
JavaScript
Temporal

The Temporal object enables date and time management in various scenarios, including built-in time zone and calendar representation, wall-clock time conversions, arithmetics, formatting, and more. It is designed as a full replacement for the Date object.

developer.mozilla.org
MDN 2024 content projects
7 months ago
Let's have a look at MDN Web Docs content projects in 2024, with highlights of our top picks and recommended reading, and at what's next on MDN for 2025.
developer.mozilla.org
A new learning experience on MDN
7 months ago
There's a new Learn Web Development section on MDN that merges the MDN Curriculum with the Learn section. Here's the background to these changes, what's new, and what you can expect to see in the future.
developer.mozilla.org
Introducing the new MDN Community page
9 months ago
We are thrilled to announce the new MDN community page that will be a hub to recognize our contributors and a place for contributors to get involved.
developer.mozilla.org
Locale-sensitive text segmentation in JavaScript with Intl.Segmenter
11 months ago
Learn how to use Intl.Segmenter for locale-sensitive text segmentation in JavaScript to simplify localization, count words or sentences in different languages, and more.