Question

Is there a way to know if a textfield is an instance of jQuery UI Datepicker?

In example, lets say I have this code:

$('#item_id').datepicker();

Is there a way to do something like this:

if($('#item_id') IS NOT A DATEPICKER YET)
{
    $('#item_id').datepicker();
}

The above conditional check, of course, is in human language and not JavaScript regular code 😉

PS: I know my question is very general, but my English are not so good 🙁

Answer 1

Once a textfield has been applied with a JQuery UI Datepicker, it will contain a ‘hasDatepicker’ class.

Perhaps you can form a query like $('#field').hasClass('hasDatepicker') to check if the a specific textfield with id ‘field’ has a datepicker feature applied on it. Make sure you do the check after the datepicker has been applied, not before.

Alternatively, you can just do a check of the same classes used to apply the datepicker.

If you use $(".applyDatepicker").datepicker(); to apply the datepicker on all textfield with ‘applyDatepicker’ class. Then you can just backtrack with $('#field').hasClass('applyDatepicker').