Question

i have code on the onSelect event of the jquery ui datepicker and i now want to only run my function if the date has changed values (so if a user selects a date that was already there in the textbox, i don’t want to run this code as it will be a redundant calculation). Here is my existing code.

$('#Milestone').datepicker({
    dateFormat: 'dd M yy',
    onSelect: calcUpdate
});

Answer 1

You can use data to store previously stored value and compare the current value to it.

Try this(put these statements in your document ready event):

$('#Milestone').data("prev", $(this).val());
$('#Milestone').datepicker({
    dateFormat: 'dd M yy',
    onSelect: function(dateText){
            var prevDate = $(this).data("prev")
            var curDate = dateText;
            if(prevDate == curDate){
              $(this).data("prev", curDate)
                calcUpdate();
            }
        }
});