JavaScript Window_basics Guide
The Window object is the global object in browser JavaScript. It provides access to DOM, BOM, timers, and browser APIs. The guide walks through Window Properties. `window.innerWidth/Height` — viewport. `window.scrollX/scrollY` — scroll position. `window.location` — URL (href, hostname, pathname, search, hash). `window.history` — navigation (back, forward, pushState). `window.navigator` — browser info (userAgent, platform, language). `window.screen` — display (width, height, colorDepth). `window.document` — DOM entry point. The guide is organized into 1 sections that build on each other, each pairing a prose explanation with runnable code. Related guides: Arrays, Strings, Numbers, Math, Date. This is one of 145 JavaScript guides on JS Reference — see the full list on the guides page. Practice what you learn in the JavaScript playground, and look up any unfamiliar term in the JavaScript glossary.