jquery datetime picker set minDate dynamic

If you have two textboxes with corresponding IDs from and to and you want the minDate of to to be the selected date of from then do the following:

$("#from").datepicker({
    minDate: 0, // to disable past dates (skip if not needed)
    onClose: function(selectedDate) {
        // Set the minDate of 'to' as the selectedDate of 'from'
        $("#to").datepicker("option", "minDate", selectedDate);
    }
});

$("#to").datepicker();

You can restrict the datepicker range.

But you want to set this range on creation of the datepicker on the "from". I made you a demo which seems to work OK as far as I understand the question.

you can set and get minDate dynamically with setter and getter:

//getter
var minDate = $( ".selector" ).datepicker( "option", "minDate" );
//setter
$( ".selector" ).datepicker( "option", "minDate", new Date(2007, 1 - 1, 1) );

explained here