获取今天星期几

根据今天日期获取今天星期几

const getWeekday = day => {
    let weekArr = [ "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" ];
    let week = weekArr[newDate(day).getDay()];
    return week;
}
const newDate = strdate => {
    let arr = strdate.split(/[- : \/]/);
    let date = new Date(arr[0], arr[1]-1, arr[2], arr[3], arr[4], arr[5]);
    return date;
}