1

I hope that one of you experts can help me with a problem in datepicker.

I have a page with the following fields

date, week, item number, description, price

I can get the date picker to work for date and week but only if I assign datepicker to each of them.

My problem is that I want it so that when you select the date in the date field then puts datepicker automatically week number into the week field so you do not need datepicker 2 times but only once.

Unfortunately I do not have much knowledge of javascript and therefore hope there is someone who can help me

Many thanks in advance

Niels Baeklund

Susam Pal
  • 32,765
  • 12
  • 81
  • 103
user3004377
  • 11
  • 1

1 Answers1

0

With the help of this answer, I learnt to get the week number using the following method.

Date.prototype.getWeek = function() {
        var onejan = new Date(this.getFullYear(),0,1);
        return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7);
    }

Then I have used this to get the weeknumber in the datepicker like 

$('#datepicker').datepicker({
    onSelect: function (date) {
        var dat = new Date(date); //convert string to date
        var weekNo = dat.getWeek();
        $('#week').val(weekNo);

    }
});

JSFiddle1

Updates:

After a few research, I ended up with a nice solution within jQuery UI datepicker.

$('#datepicker').datepicker({
    onSelect: function (dateText, inst) {
        $('#week').val($.datepicker.iso8601Week(new Date(dateText)));
    }
});

JSFiddle2

Hope you understood.

Community
  • 1
  • 1
Praveen
  • 55,303
  • 33
  • 133
  • 164
  • 1
    Many thanks for your prompt reply and it was just the solution I was looking for and it works perfectly. I've gotten a little better understanding about datepicker :) Thanks again sincerely, Niels Baeklund – user3004377 Nov 18 '13 at 13:38
  • @user3004377 Glad to help you, my friend :) – Praveen Nov 18 '13 at 13:39
  • a small problem In Denmark we have the date format date format 'dd / mm / yy', but when I use it is my week no NaN I wonder if you have a go idea Thanks in advance Niels Baeklund – user3004377 Nov 18 '13 at 14:20