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I am just few days old in javascript and jquery.my question is first select date from date picker or calendar and easily convert this date into week number. Please help me because i don't know anything about that..plzzzzz

Nilesh More
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  • @AnoopJoshi like, 47, 52 week of the year, Nilesh More cant you google it a little bit, i think you will be able to find something out there. – Vitaliy Terziev Nov 20 '15 at 09:53
  • see this http://jsfiddle.net/Fa8Xx/3785/ – Anoop Joshi P Nov 20 '15 at 09:54
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  • @Anup-Week number means 1 to 53 depending on selected date – Nilesh More Nov 20 '15 at 10:57

2 Answers2

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Using Jquerys date picker try the following

HTML

<input type="text" class="calendar">

JS

 $(".calendar").datepicker({
        showWeek: true,
        onSelect: function(dateText, inst) {
            alert("Week " + $.datepicker.iso8601Week(new Date(dateText)));
        }
    });

Heres the Fiddle

ahervin
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  • hello sir, i used your code for my project but I run individual program it worked excellent. but when I merged it with my KPI tracking Tool project then it doesnt work,it gives "Uncaught typeError: $(...) datepicker is not function." please help me. My code is below, $(".calendar").datepicker({ altField : "#alternate1", altFormat : "DD, d MM, yy", onSelect: function(dateText) { var date = $(this).datepicker('getDate'); $("#alternate").val(+date.getFullYear()); $(this).val("week number"+ $.datepicker.iso8601Week(new Date(dateText))); } }); – Nilesh More Nov 26 '15 at 14:09
  • @NileshMore See this answer http://stackoverflow.com/questions/1212696/jquery-ui-datepicker-datepicker-is-not-a-function – ahervin Nov 26 '15 at 16:14
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Try this code to get the week from the given date. http://jsfiddle.net/3TA4s/134/

<input type="text"  placeholder="date1" id="startdate">
<input type="text" placeholder="date2" id="enddate">
<input type="text" id="days">
<script>
$(document).ready(function() {

$( "#startdate,#enddate" ).datepicker({
changeMonth: true,
changeYear: true,
firstDay: 1,
dateFormat: 'dd/mm/yy',
})

$( "#startdate" ).datepicker({ dateFormat: 'dd-mm-yy' });
$( "#enddate" ).datepicker({ dateFormat: 'dd-mm-yy' });

$('#enddate').change(function() {
    var start = $('#startdate').datepicker('getDate');
    var end   = $('#enddate').datepicker('getDate');

if (start<end) {
    var days   = (end - start)/1000/60/60/24/7;
$('#days').val(parseInt(days));
}
else {
  alert ("You cant come back before you have been!");
  $('#startdate').val("");
  $('#enddate').val("");
    $('#days').val("");
}
}); //end change function
}); //end ready
</script>
Sathish
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