获取CSS3 transform的rotate的角度值

1

 function getmatrix(a, b, c, d, e, f) {
            var aa = Math.round(180 * Math.asin(a) / Math.PI);
            var bb = Math.round(180 * Math.acos(b) / Math.PI);
            var cc = Math.round(180 * Math.asin(c) / Math.PI);
            var dd = Math.round(180 * Math.acos(d) / Math.PI);
            var deg = 0;
            if (aa == bb || -aa == bb) {
                deg = dd;
            } else if (-aa + bb == 180) {
                deg = 180 + cc;
            } else if (aa + bb == 180) {
                deg = 360 - cc || 360 - dd;
            }
            return deg >= 360 ? 0 : deg;
            //return (aa+','+bb+','+cc+','+dd);  
        }

　　2

   var a = $("#gogo").css("transform");
            var aa = a.split(',');
             var aaa = getmatrix(aa[0].substring(aa[0].indexOf('(') + 1), aa[1], aa[2], aa[3], aa[4], aa[5].substring(0,aa[5].indexOf(')')));
            console.log(aaa);

　　aaa 就是获取到的角度数