function(key, value){
        
        var format = function(key){
            return key.replace(/(-([a-z]))/g, function(s, s1, s2){
                return s2.toUpperCase();
            });
        };

        return keyValue.call(this, arguments, function(el){
            return el.style[format(key)];
        }, function(el, key, attrs){
            el.style[format(key)] = attrs[key] + '';
        });
    }
function(key, value){
        
        var format = function(key){
            return key.replace(/(-([a-z]))/g, function(s, s1, s2){
                return s2.toUpperCase();
            });
        };

        return keyValue.call(this, arguments, function(el){
            return el.style[format(key)];
        }, function(el, key, attrs){
            el.style[format(key)] = attrs[key] + '';
        });
    }
function ( key , value ) { var format = function ( key ) { return key . replace ( / (-([a-z])) / g , function ( s , s1 , s2 ) { return s2 . toUpperCase ( ) ; } ) ; } ; return keyValue . call ( this , arguments , function ( el ) { return el . style [ format ( key ) ] ; } , function ( el , key , attrs ) { el . style [ format ( key ) ] = attrs [ key ] + '' ; } ) ; }
设置css css('color', 'red') css({ color: 'red' })
设置css css ( color red ) css ( { color : red } )