/// <summary>

         /// 求某年有多少周

         /// 返回 int

         /// </summary>

         /// <param name="strYear"></param>

         /// <returns>int</returns>

         public static int GetYearWeekCount(int strYear)

         {

             //string returnStr = "";

             System.DateTime fDt = DateTime.Parse(strYear.ToString() + "-01-01");

             int k = Convert.ToInt32(fDt.DayOfWeek);//得到该年的第一天是周几

             if (k == )

             {

                 int countDay = fDt.AddYears().AddDays(-).DayOfYear;

                 int countWeek = countDay /  + ;

                 return countWeek;

             }

             else

             {

                 int countDay = fDt.AddYears().AddDays(-).DayOfYear;

                 int countWeek = countDay / ;

                 return countWeek;

             }

         }

  //获取日期是当年的第几周

     function getWeekOfYear(date) {

         //s声明一个日期未传入的日期

         var today = new Date(date);

         //获取当年的第一天

         var firstDay = new Date(today.getFullYear(), 0, 1);

         //console.log("一年的第一天是");

         //console.log(firstDay.Format("yyyy-MM-dd"));

         //获取第一天是一星期的哪一天,周一是1,周日是0.

         var dayOfWeek = firstDay.getDay();

         //console.log("是");

         //console.log(dayOfWeek);

         //声明一个数字1

         var spendDay = 1;

         if (dayOfWeek == 0) {   //一年的第一天为周日

             // spendDay = 0;

             firstDay = new Date(today.getFullYear(), 0, 2);

             //console.log("一年的第一天是周日");

             //console.log("设置2号为一周开始");

             //console.log(firstDay);

         }

         else if (dayOfWeek == 1) {

             //console.log("一年的第一天是周一");

             //console.log("设置1号为一周开始");

             firstDay = new Date(today.getFullYear(), 0, 1);

             // console.log(firstDay)

         }

         else {

             //console.log("其他情况");

             spendDay = 7 - dayOfWeek;

             firstDay = new Date(today.getFullYear(), 0, 2 + spendDay);

             // console.log(firstDay);

         }

         var d = Math.ceil((today.valueOf() - firstDay.valueOf()) / 86400000);

         var result = Math.ceil(d / 7);

         var week = (result + 1).toString(); //周

         var year = today.getFullYear();

         var weekfinal = week.length < 2 ? '0' + week : week;

         return year + "第" + weekfinal + "周";

     };

 Date.prototype.Format = function (fmt) { //author: meizz

         var o = {

             "M+": this.getMonth() + 1, //月份

             "d+": this.getDate(), //日

             "h+": this.getHours(), //小时

             "m+": this.getMinutes(), //分

             "s+": this.getSeconds(), //秒

             "q+": Math.floor((this.getMonth() + 3) / 3), //季度

             "S": this.getMilliseconds() //毫秒

         };

         if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));

         for (var k in o)

             if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));

         return fmt;

     }