根据 yyyymmdd格式日期取得当前日期所在周的开始和结束日期

Js 根据所选日期获取当天是周几，并获取本周的开始日期和结束日期

在这里设置的一周的开始日期为周一，结束未周末

//检查本周是否已经填报

function checkHasAdd(){

         var createDate = jQuery("#createDateId").val();                   

         var weekStartDate = getStarOrEndDay(createDate,0)

         var weekEndDate = getStarOrEndDay(createDate,1)

         jQuery.ajax({

            type: "get",

            url: "ajax.asp",

            data: "weekStartDate="+weekStartDate+"&weekEndDate="+weekEndDate+"&pId="+<%=pid%>,

            cache:false,

            success: function(msg){

                            if(msg == 1) {

                                     alert("本周资金余额周报已经提交！");

                                     jQuery(window.parent.document).find("#btnSaveId").attr("disabled","true");

                                     jQuery(window.parent.document).find("#btnFlow0Id").attr("disabled","true");

                            }

                            else {

                                     jQuery(window.parent.document).find("#btnSaveId").removeAttr("disabled");

                                     jQuery(window.parent.document).find("#btnFlow0Id").removeAttr("disabled");

                   }

            }

         });

}

//获取所选日期所在周的开始日期和结束日期 0:本周开始日期，其他：本周结束日期

function getStarOrEndDay(createDate,types){

         var createDate = jQuery("#createDateId").val();  

         createDate = getDate(createDate);

         var currentDay=createDate.getDay();//获取当前时间是周几使用该方法获取的周是0-6，如果是0，把0转换为7

         if(currentDay==0){

                   currentDay=7

         }

         if (types==0){

                   var mondayTime=createDate.getTime()-(currentDay-1)*24*60*60*1000;//日期转换为毫秒

                   var starDay = new Date(mondayTime);

                   starDay.setTime(starDay);   //把毫秒在转换为日期格式

                   return formatDate(starDay) //格式化为 yyyy-mm-dd格式的时间

         }

         else{

                   var sundayTime=createDate.getTime()+(7-currentDay)*24*60*60*1000;

                   var endDay = new Date(sundayTime)

                   return formatDate(endDay);

         }

}

//格式化日期为yyyy-mm-dd格式

function formatDate(date) {     

         var myyear = date.getFullYear();    

    var mymonth = date.getMonth()+1;    

    var myweekday = date.getDate();     

    if(mymonth < 10){    

        mymonth = "0" + mymonth;    

    }     

    if(myweekday < 10){    

        myweekday = "0" + myweekday;    

    }    

    return (myyear+"-"+mymonth + "-" + myweekday);     

}

 //字符串转日期格式，strDate要转为日期格式的字符串

//子页面获取的strDate为字符串类型，把字符串的日期转换为标准的日期时间

function getDate(strDate) {

         var date = eval('new Date(' + strDate.replace(/\d+(?=-[^-]+$)/,

         function (a) { return parseInt(a, 10) - 1; }).match(/\d+/g) + ')');

         return date;

}