jQuery Forum

I have a datepicker control attached to a textbox. I'm trying to configure the onChangeMonthYear event for a datepicker control such that when a user selects a year, the value in the textbox accordingly. I've got this working fine except under the following condition:

A user clicks in the textbox and the datepicker is displayed. It's value is null at this point. The user changes a year or month value but has not selected a day. Neither the displayed `value in the textbox nor the datepicker changes. I've placed an alert in the onChangeMonthYear function and I see that the value is being accepted but for some reason the value changes back to the default value.

If I first select a day value on loading the datepicker (that is a value is set), then on subsequent calls, the function works as expected. On changing the year, the year value in the textbox changes also.

The code in the function is

// I set changingdob to false globally higher up in the code
if (changingdob == false)
{
   var d = $(".dobbox").datepicker("getDate");
           
   if (d != null)
  {
      //prevent infinite recurssion
      changingdob = true;
                       
      d.setFullYear(year);
      d.setMonth(month-1);
           
     $(".dobbox").datepicker("setDate", d);
     changingdob = false;
  }
}

Is there a reason for the above code to not work in the case when the datepicker's value is still null?