JSFiddle - React, Tailwind, and code Playground

by BinaryAcid

HTML

<p>Only if first selection is made will class be added.</p>
<select id="Field119">
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>

<label for="field119">Poop</label>

CSS

.error {
 background-color: red;   
}

JavaScript

$('#Field119').change(function(){
    
    
    $("label[for=field119]").remove();
    
    var StateDD = $("#Field119").val();
    
    if (StateDD == 'volvo') {
      $('#Field119').addClass('error');
      $('<label for="Field119" generated="true" id="dm" class="error">This field is required.</label>').insertAfter('#Field119');
    }
    else {
      $('#Field119').removeClass('error');  
      $('#dm').remove();
    };
    
});