JSFiddle - React, Tailwind, and code Playground

by Petr Haluza

HTML

<div class="checkbox-group pull-right">
  <label style="cursor: default;">Datum:</label>
  <div>
    <span class="coltitle">od</span>
    <input id="InvCFrom" class="InvDate input_text datepicker hasDatepicker" type="text" size="8" xonfocus="select()" value="15.3.2019" name="InvCFrom">                                   <span class="coltitle"> do</span>
    <input id="InvCTo" class="InvDate input_text datepicker hasDatepicker" type="text" size="8" xonfocus="select()" value="" name="InvCTo">
  </div>
</div>

CSS

.notEmpty {border:1px solid #ea0000; background:#fee;}

JavaScript

$('.datepicker').each(function(){
    if ($(this).val()){
      $(this).addClass("notEmpty");
    }
});