javascript - Datepicker change date format and submit form -

i have found 1 useful range datepicker (with 1 input field):

http://bseth99.github.io/projects/jquery-ui/4-jquery-ui-datepicker-range.html

i have changed format 'mm/dd/yy' 'yy-mm-dd', works far user selects 2 different dates. if user chooses same date start , end, format still default - 'mm/dd/yy'. how can change ?

the second part of problem submit form. have tried that, doesnt work:

.datepicker({     onchange: function () {         $('#exchange_search').submit();     } }) 

i have found how submit form. still remains problem single date format.

here solution if needs it:

onafterupdate: function ( inst ) {     $('<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" data-handler="hide" data-event="click">done</button>')     .appendto($('#jrange div .ui-datepicker-buttonpane'))     .on('click', function () {          $('#jrange div').hide();         $('#exchange_search').submit();     }); }