JSFiddle - React, Tailwind, and code Playground
by anoopsuda
HTML
<ul id="ul">
<li><span></span></li>
<li><span></span></li>
<li><span></span></li>
<li><span></span></li>
<li><span></span></li>
<li><span></span></li>
<li><span></span></li>
</ul>
JavaScript
const lis = document.querySelectorAll('#ul li span');
for (let i = 0; i < lis.length; i++) {
lis[i].innerHTML = i + 1;
}