JSFiddle - React, Tailwind, and code Playground

by MrTimon

HTML

<script src="https://code.jquery.com/jquery-1.11.3.js"></script>

<div class='half'>
  <ul class="sub-menu_lvl1">
    <li><a href="#">1</a></li>
    <li><a href="#">2</a></li>
    <li><a href="#">3</a></li>
    <li><a href="#">4</a></li>
    <li><a href="#">5</a></li>
  </ul>
</div>

<div class='half'>
  <ul>
    <li class="sub-menu_lvl2 one"><a href="#">one</a></li>
    <li class="sub-menu_lvl2 two"><a href="#">two</a></li>
    <li class="sub-menu_lvl2 three"><a href="#">three</a></li>
    <li class="sub-menu_lvl2 four"><a href="#">four</a></li>
    <li class="sub-menu_lvl2 five"><a href="#">five</a></li>
  </ul>
</div>

CSS

.half {
  width:100px;
  display: inline-block;
  margin: 0 10px;
}

ul {
  display: block;
  width: 100%
}

ul li {
  list-style: none;
}
ul li a{
  display: block;
  width: 20px;
  height: 20px;
  padding: 10px;
  background: grey;
  margin: 5px;
  text-align: center;
}

.sub-menu_lvl2 {
  display: none;
}

.sub-menu_lvl2.info-visible {
  display: block;
}

JavaScript

$('.sub-menu_lvl1 li a').mouseenter(function() {
			var classes = ['one','two','three','four','five']
     
     $('.sub-menu_lvl2').removeClass('info-visible');
     $('.sub-menu_lvl2.' + classes[ $(this).closest('li').index()]).addClass('info-visible');
  });