Browser and client details in JavaScript

gistfile1.js

/****************************************************
 * Website
 ****************************************************/

// Page title
document.title.substring(0, 200);

// Domain (i.e. gist.github.com)
document.domain;

// Returns object with host, path, protocol, port, hash...
document.location

// Referrer
document.referrer;


/****************************************************
 * System
 ****************************************************/
 
// Returns object with UA, lang, platform, vendor... if undefined then call as 'window.navigator'
navigator;

// OS (i.e. MacIntel)
navigator.platform

// User Agent
navigator.userAgent;

// User language (i.e. en-US)
navigator.userLanguage || navigator.language;


/****************************************************
 * Dimensions
 ****************************************************/

// Browser window dimensions
document.body.offsetHeight
document.body.offsetWidth

// Browser viewport dimensions
window.innerHeight
window.innerWidth

// Computer screen dimensions and color depth
screen.height
screen.width
screen.colorDepth