Learn about the HTMLElement.focus() method, including its syntax, code examples, specifications, and browser compatibility.... Syntax js focus() focus(options) Parameters...not set focusVisible to true . js document.getElementById("focusButton")...
This page describes how we use Markdown to write documentation on MDN Web Docs. We have chosen GitHub-Flavored Markdown (GFM) as a baseline, and added some extensions to support some of the things we need to do on MDN that aren't readily supported in GFM....Programming Languages JavaScript js - JavaScript ts - TypeScript...URIs and URLs For example: md ```js const greeting = "I will get...
The Media Session API provides a way to customize media notifications. It does this by providing metadata for display by the user agent for the media your web app is playing....the media session to playing : js navigator.mediaSession.playbackState...for the user control actions: js if ("mediaSession" in navigator)...
The Screen Wake Lock API provides a way to prevent devices from dimming or locking the screen when an application needs to keep running.... js if ("wakeLock" in navigator)...reflect the wake lock is active. js // Create a reference for the...
The beauty of the web is that you can combine technologies to create new forms. Having native audio and video in the browser means we can use these data streams with technologies such as
The Set object lets you store unique values of any type, whether primitive values or object references....keys when used in set methods: js const a = new Set([1, 2, 3]);...Examples Using the Set object js const mySet1 = new Set(); mySet1...
This article demonstrates how to use a ConstantSourceNode to link multiple parameters together so they share the same value, which can be changed by setting the value of the ConstantSourceNode.offset parameter.... js // Useful UI elements const playButton...tasks to set up the audio graph. js function setup() { context =...
Learn about the DirectoryReaderSync interface, including specifications and browser compatibility.... js // Taking care of the browser-specific...const worker = new Worker("worker.js"); worker.onmessage = (e) =>...
Learn about the NodeList interface, including its properties and methods, specifications and browser compatibility....childNodes is live: js const parent = document.getE...a NodeList using a for loop: js for (let i = 0; i < myNodeList...