modernizr/feature-detects/battery.js

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

/*!
{
  "name": "Battery API",
  "property": "batteryapi",
  "aliases": ["battery-api"],
  "tags": ["device", "media"],
  "authors": ["Paul Sayre"],
  "notes": [{
    "name": "MDN documentation",
    "href": "https://developer.mozilla.org/en/DOM/window.navigator.mozBattery"
  }]
}
!*/
/* DOC

Detect support for the Battery API, for accessing information about the system's battery charge level.

*/
define(['Modernizr', 'prefixed'], function( Modernizr, prefixed ) {
  Modernizr.addTest('batteryapi', !!prefixed('battery', navigator), { aliases: ['battery-api'] });
});