Supports for CSS properties in JavaScript. Source: http://ryanmorr.com/detecting-css-style-support

support.js

(function(win){
    "use strict";
   
    var el = win.document.createElement('div'),
    camelRe = /-([a-z]|[0-9])/ig,
    cache = {},
    support,
    camel,
    key;
               
    win.isStyleSupported = function(style, value){
        value = arguments.length === 2 ? value : 'inherit';
        if('CSS' in win && 'supports' in win.CSS){
            return win.CSS.supports(style, value); 
        }
        if('supportsCSS' in win){
            return win.supportsCSS(style, value);
        }
        key = style + ':' + value;
        if(key in cache){
            return cache[key]; 
        }
        support = false;
        camel = style.replace(camelRe, function(all, letter){
            return (letter + '').toUpperCase();                                            
        });
        support = (typeof el.style[camel] === 'string');
        el.style.cssText = style+':'+value;
        support = support && (el.style[camel] !== '');
        return cache[key] = support;   
    };
       
})(this);