JSFiddle - React, Tailwind, and code Playground

HTML

<BODY onload="foo()">
	<div class="item" ></div>
	<div class="item one" ></div>
</BODY>

JavaScript

function foo()
{ 
e = document.getElementsByClassName('item');
for(var i = 0; i < e.length; i++) {
   if(e[i].className == 'item') {
        // Do something with the element e[i]
		alert(e[i].className);
    }
}
}