JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
<li name="dd">foo</li>
<li name="dde">foo</li>
<li name="dd">foo</li>
<li name="dde">foo</li>
<li name="dd">foo</li>
<li name="dde">foo</li>
<li name="dd">foo</li>
<li name="dde">foo</li>
</ul>

JavaScript

puce2 = document.getElementsByName("dd");
puce2.forEach(
function(elt){
   console.log(elt);
   elt.style.backgroundColor="cyan";
   });