j查询日期选取器周选择

我有一个jQueryUI日期选择器，我正在尝试获取代码来选择选择日期的特定星期，它适用于除星期日以外的日常工作。当我选择星期日时，将显示下一周，但它应该显示当前一周。例如，如果我选择 5 月 9 日，范围是 2016 年 5 月 9 日至 5 月 15 日，但是当我选择 15 日时，我得到 2016 年 5 月 16 日至 5 月 22 日，当时我认为它应该显示与我选择 9 日相同的范围

.HTML

<input style="display: none" name="date" type="input" id="datePick"/>
<span>Week Of: </span>
<span style="font-weight: bold" id="weekRange">         
</span>
<br/>
M : <span id="mondayNum"></span>
<br/>
TU : <span id="tuesdayNum"></span>
<br/>
W : <span id="wednesdayNum"></span>
<br/>
TH : <span id="thursdayNum"></span>
<br/>
F : <span id="fridayNum"></span>
<br/>
SA : <span id="saturdayNum"></span>
<br/>
SU : <span id="sundayNum"></span>

JavaScript

$( document ).ready(function()
    {
        //alert(t1);
        $("#datePick").datepicker(
        {
            showWeek:true,
            showOtherMonths: true,
            selectOtherMonths: true,
            firstDay: 1,
            showOn: "button",
            buttonImage: "https://htmlcssphptutorial.files.wordpress.com/2015/09/b_calendar.png",
            buttonImageOnly:true,
            onSelect: function(dateText, inst)
            {
                var dayOne,dayTwo,dayThree,dayFour,dayFive,daySix,daySeven;
                var date = $(this).datepicker('getDate');
                //console.log($.datepicker.iso8601Week(new Date(dateText)));
                tempDay = $.datepicker.formatDate( 'D', date);
                if(tempDay == 'Sun')
                {
                    console.log("Sunday");
                    console.log(date);                  
                    console.log(tempDay);
                dayOne = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 1);
            //  
                dayTwo = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 2);
                dayThree = new Date(date.getFullYear(), date.getMonth(), date.getDate()  - date.getDay() + 3);
                dayFour = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 4);
                dayFive = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 5);
                daySix = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 6);
                daySeven = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 7);
          $('#weekRange').text($.datepicker.formatDate( 'M d', dayOne) + " to " + $.datepicker.formatDate( 'M d, yy', daySeven));
                $('#mondayNum').text($.datepicker.formatDate( 'd', dayOne));
                $('#tuesdayNum').text($.datepicker.formatDate( 'd', dayTwo));
                $('#wednesdayNum').text($.datepicker.formatDate( 'd', dayThree));
                $('#thursdayNum').text($.datepicker.formatDate( 'd', dayFour));
                $('#fridayNum').text($.datepicker.formatDate( 'd', dayFive));
                $('#saturdayNum').text($.datepicker.formatDate( 'd', daySix));
                $('#sundayNum').text($.datepicker.formatDate( 'd', daySeven));
                $("#datePick").datepicker("setDate", dayOne);
        }
                else
                {
                    console.log("Not Sunday");
                    console.log(tempDay);
                previousWeek = ($.datepicker.iso8601Week(date) - 1);
                console.log("Picked day previous Week: " + previousWeek);
                console.log("Current week: " + $.datepicker.iso8601Week(date));
                var nextWeek = ($.datepicker.iso8601Week(date) + 1);
                console.log("Picked day following Week: " + nextWeek);
                console.log(dateText);
                dayOne = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 1);
                dayTwo = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 2);
                dayThree = new Date(date.getFullYear(), date.getMonth(), date.getDate()  - date.getDay() + 3);
                dayFour = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 4);
                dayFive = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 5);
                daySix = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 6);
                daySeven = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 7);
                }

                console.log("2nd: " + dayTwo);
                console.log("3rd: " + dayThree);
                console.log("4th: " + dayFour);
                console.log("5th: " + dayFive);
                console.log("6th: " + daySix);
                console.log("7th: " + daySeven);

                var dateFormat = inst.settings.dateFormat || $.datepicker._defaults.dateFormat;
                //console.log($.datepicker.formatDate( 'M d', monday, inst.settings ) + " to " + $.datepicker.formatDate( 'M d, yy', sunday, inst.settings ));
                $('#weekRange').text($.datepicker.formatDate( 'M d', dayOne, inst.settings ) + " to " + $.datepicker.formatDate( 'M d, yy', daySeven, inst.settings ));
            $('#mondayNum').text($.datepicker.formatDate( 'd', dayOne));
                $('#tuesdayNum').text($.datepicker.formatDate( 'd', dayTwo));
                $('#wednesdayNum').text($.datepicker.formatDate( 'd', dayThree));
                $('#thursdayNum').text($.datepicker.formatDate( 'd', dayFour));
                $('#fridayNum').text($.datepicker.formatDate( 'd', dayFive));
                $('#saturdayNum').text($.datepicker.formatDate( 'd', daySix));
                $('#sundayNum').text($.datepicker.formatDate( 'd', daySeven));
                $("#datePick").datepicker("setDate", dayOne);
                //alert($.datepicker.formatDate( 'd', dayOne, inst.settings ));
            }
        });
        //console.log("1st: " + dayOne);
        $("#datePick").datepicker("setDate", new Date());
        var date = $("#datePick").datepicker('getDate');
        //console.log(test);
        dayOne = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 1);
        dayTwo = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 2);
        dayThree = new Date(date.getFullYear(), date.getMonth(), date.getDate()  - date.getDay() + 3);
        dayFour = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 4);
        dayFive = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 5);
        daySix = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 6);
        daySeven = new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay() + 7);
        $('#weekRange').text($.datepicker.formatDate( 'M d', dayOne) + " to " + $.datepicker.formatDate( 'M d, yy', daySeven));

    //console.log("1st: "+ bob);
    }); 

斯菲德尔https://jsfiddle.net/gauldivic/vexuu26j/