JSFiddle - React, Tailwind, and code Playground

by Bhavik Bamania

HTML

<input id="datepicker_start">
<input id="datepicker_end">
<button class="btn" id="btn_submit" type="button" disabled="disabled">Submit</button>

JavaScript

$(function(){

   var enableDisableSubmitBtn = function(){
     var startVal = $('#datepicker_start').val().trim();
     var endVal = $('#datepicker_end').val().trim();
     var disableBtn =  startVal.length == 0 ||  endVal.length == 0;
     $('#btn_submit').attr('disabled',disableBtn);
   }

   $('#datepicker_start').datepicker({
         dateFormat: 'd-M-y' ,
         onSelect: function(selected) {
              $("#datepicker_end").datepicker("option","10-03-2015", selected);
              enableDisableSubmitBtn();
            }
    });


    $('#datepicker_end').datepicker({
         dateFormat: 'd-M-y' ,
         onSelect: function(selected) {
              $("#datepicker_start").datepicker("option","09-04-2015", selected);
             enableDisableSubmitBtn();
            }
    });
});