Introducing the MDN Playground: Bring your code to life

<ruby>: The Ruby Annotation element

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418 I'm a teapot

Server-sent events

Baseline: a unified view of stable web features

TIL: You can make an XMLHttpRequest synchronous...

Firefox 111.0 enabled Origin private file system access

The <Dialog> Element

The i Element Has Changed

The Marquee Element

Container queries are finally real

Evolution of HTTP

OffscreenCanvas support in Firefox! (Firefox 105 for developers - Mozilla | MDN)

structuredClone() in JavaScript

deep clone with structuredClone() - Web APIs | MDN

MDN Web Docs Redesign

Barcode Detection API

HTMLMediaElement.canPlayType()

StructuredClone() - new javascript method to clone objects

Vibration API

The ruby HTML Element

Web Workers API

Color Vision Simulation

Django Web Framework - Learn web development | MDN

HTTP Status 418 – I'm a teapot

The HTML Data List Element

Responsive images

Intl

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