点击获取今天时间、明天时间、本周时间、本月时间

function DateTime(Tid) {
    var now = new Date();
    var validDate = "",
        day = now.getDate(),
        month = now.getMonth(),
        year = now.getFullYear();
    var nowTime = now.getTime();
    var oneDayTime = 24 * 60 * 60 * 1000;
    var mDay = now.getDay(); /*显示周一*/
    var MondayTime = nowTime - (mDay - 1) * oneDayTime; /*显示周日*/
    var SundayTime = nowTime + (7 - mDay) * oneDayTime; /*初始化日期时间*/
    var monday = new Date(MondayTime);
    var sunday = new Date(SundayTime);
    switch (Tid) {
        case "1":
            validDate = year + '.' + (month + 1) + '.' + day;
            break;
        case "2":
            validDate = year + '.' + (month + 1) + '.' + (day + 1);
            break;
        case "3":
            validDate = monday.getFullYear() + '.' + (monday.getMonth() + 1) + '.' + monday.getDate() + '~' + sunday.getFullYear() + '.' + (sunday.getMonth() + 1) + '.' + sunday.getDate();
            break;
        case "4":
            var tempdate = year + '.' + (month + 1),
                enddate = getCurrentMonthLast(new Date(tempdate));
            validDate = year + '.' + (month + 1) + '.1~' + tempdate + '.' + enddate;
            break;
    }
    if (validDate) {
        validDate = '有效期限：' + validDate;
        $('.js-validdate').text(validDate);
    }

    function getCurrentMonthLast(date) {
        var currentMonth = date.getMonth();
        var nextMonth = ++currentMonth;
        var nextMonthFirstDay = new Date(date.getFullYear(), nextMonth, 1);
        var oneDay = 1000 * 60 * 60 * 24;
        return new Date(nextMonthFirstDay - oneDay).getDate();
    }
}

Tid是点击今天时间、明天时间、本周时间、本月时间的id