var support_css3 = (function() {
                var div = document.createElement('div'),
                        vendors = 'Ms O Moz Webkit'.split(' '),
                        len = vendors.length;

                return function(prop) {
                    if ( prop in div.style ) return true;

                    prop = prop.replace(/^[a-z]/, function(val) {
                        return val.toUpperCase();
                    });

                    while(len--) {
                        if ( vendors[len] + prop in div.style ) {
                            return true;
                        }
                    }
                    return false;
                };
            })();
            function support_css3_3d(){
                var docElement = document.documentElement;
                var support = support_css3('perspective');
                var body = document.body;
                if(support && 'webkitPerspective' in docElement.style){
                    var style = document.createElement('style');
                    style.type = 'text/css';
                    style.innerHTML = '@media (transform-3d),(-webkit-transform-3d){#css3_3d_test{left:9px;position:absolute;height:3px;}}';
                    body.appendChild(style);
                    var div = document.createElement('div');
                    div.id = 'css3_3d_test';
                    body.appendChild(div);

                    support = div.offsetLeft === 9 && div.offsetHeight === 3;

                }
                return support;
            }

出处：http://www.cnblogs.com/lvdabao/p/HTML5_CSS3_detection.html