js 获取星期

     　　　　var week;
            if (new Date().getDay() == 0) week = "星期日";
            if (new Date().getDay() == 1) week = "星期一";
            if (new Date().getDay() == 2) week = "星期二";
            if (new Date().getDay() == 3) week = "星期三";
            if (new Date().getDay() == 4) week = "星期四";
            if (new Date().getDay() == 5) week = "星期五";
            if (new Date().getDay() == 6) week = "星期六";