javascript get brother element
<ul id="menu">
<li>Home</li>
<li>Products</li>
<li class="current">Customer Support</li>
<li>Careers</li>
<li>Investors</li>
<li>News</li>
<li>About Us</li>
</ul>
<script>
let current = document.querySelector('.current');
let nextSibling = current.nextElementSibling;
console.log(nextSibling);
</script>