JSFiddle - React, Tailwind, and code Playground

HTML

<div class="background2">
 <ul class="equipement">
   <li>un</li>
   <li>deux</li>
   <li>trois</li>
   <li>quatre</li>
   <li>cinq</li>
 </ul>
 
</div>
<div class="background2">
 <ul class="equipement">
   <li>six</li>
   <li>sept</li>
   <li>huit</li>
   <li>neuf</li>
   <li>dix</li>
 </ul>
 
</div>

JavaScript

$(function(){
var background2 = document.querySelector(".background2");

var Enfants = background2.querySelectorAll(".equipement")

Enfants.forEach((Enfant) => {  console.log( Enfant.children );})

})