getStyleProperty

get-style-property.js

/*!
 * getStyleProperty by kangax
 * http://perfectionkills.com/feature-testing-css-properties/
 */

/*jshint browser: true, strict: true, undef: true */

( function( window ) {

'use strict';

var prefixes = 'Webkit Moz ms Ms O'.split(' ');
var docElemStyle = document.documentElement.style;

function getStyleProperty( propName ) {
  // test standard property first
  if ( typeof docElemStyle[ propName ] === 'string' ) {
    return propName;
  }

  // capitalize
  propName = propName.charAt(0).toUpperCase() + propName.slice(1);

  // test vendor specific properties
  var prefixed;
  for ( var i=0, len = prefixes.length; i < len; i++ ) {
    prefixed = prefixes[i] + propName;
    if ( typeof docElemStyle[ prefixed ] === 'string' ) {
      return prefixed;
    }
  }
}

// publicize
window.getStyleProperty = getStyleProperty;

})( window );