JSFiddle - React, Tailwind, and code Playground
by elneco
HTML
<ul>
<li>helllo</li>
<li>helllo</li>
<li>helllo</li>
<li>helllo</li>
<li>helllo</li>
<li>helllo</li>
</ul>
CSS
li {background: blue; color: white; padding: 5px 15px; margin: 2px;}
div li {background: green;}
JavaScript
var myset = $("ul li");
for(var i = 0; i < myset.length; i+=2) {
myset.slice(i, i+2).wrapAll("<div></div>");
}