how to set default date in jQuery UI datepicker

Question

i want to configure jQuery UI that they never set date who already gone. means only futurewise date allowed or the value i want to set is now. means current [today]'s date.

$("#datepicker").datepicker({ minDate : new Date(Date.now()), defaultDate: new Date(Date.now()) });

how i can set default date because code i posted not worked

Answer 1

<script type="text/javascript">
var d=new Date();
var today = (d.getMonth() + 1) + "/" + d.getDate() + "/" + d.getFullYear();
$(function() {               
    $("#birthdate" ).datepicker({
        defaultDate: today
    });
});
</script>