[Solved] Populate select dropdown with correct number of days when select month.

no offense but you should've found the typos in the script by yourself

Code:

$('select[name="month"]').on("change", function()
{
    var year = $('select[name="year"]').val();
    if (year > 0)
    {
        $('select[name="day"]').find("option").remove();
        var daysInMonth = new Date(year, $(this).val(), 0).getDate();
        for(var i=1; i<=daysInMonth;i++)
        {
            console.log(i);
            $('select[name="day"]').append($("<option></option>").attr("value",i).text(i));
        }

    }
});

Thank you for help I have had to add

Code:

$( document ).ready(function() {


});

And it worked.

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!