JSFiddle - React, Tailwind, and code Playground

by Petr Haluza

HTML

<div class="drop-menu">
  <div class="cat full">
  </div> 
</div>

<div class="drop-menu">
  <div class="cat full">
    mám obsah
  </div> 
</div>

<div class="drop-menu">
  <div class="cat full">
  </div> 
</div>

<div class="drop-menu">
  <div class="cat full">
    mám obsah
  </div> 
</div>

CSS

.cat {min-width:5em; height:1em; border:1px solid #aaa; margin:1em;}
.red {background:red; display:none;}

JavaScript

$('.drop-menu div.cat').each(function() {
	if ($(this).text().trim() == '') {
  	$(this).parent().addClass("red");
  }           
});