判断浏览器是否支持某一个CSS3属性

function supportCss3(style) {
    var prefix = [‘webkit‘, ‘Moz‘, ‘ms‘, ‘o‘],
        i,
        humpString = [],
        htmlStyle = document.documentElement.style,
        _toHumb = function (string) {
            return string.replace(/-(\w)/g, function ($0, $1) {
                return $1.toUpperCase();
            });
        }; 

    for (i in prefix){
        humpString.push(_toHumb(prefix[i] + ‘-‘ + style));
    }

    humpString.push(_toHumb(style)); 

    for (i in humpString){
        if (humpString[i] in htmlStyle) return true;
    }

    return false;
}

//调用：
alert(supportCss3(‘transition‘));