JSFiddle - React, Tailwind, and code Playground

HTML

<div id="firstElement"></div>
<div id="secondElement"></div>

JavaScript

var elements = document.getElementsByTagName('div');

for (var i=0; i<=elements.length; i++) {
    doSomething(elements[i]);
}

function doSomething(element) {
    console.log(element);
}