JSFiddle - React, Tailwind, and code Playground

by slace

HTML

<div>content</div>

CSS

div::before {
    content: 'before';
    margin-right: 5px;
}

div::after {
    content: 'after';
    margin-left: 5px;
}

JavaScript

var elements = document.body.childNodes;

for (var i = 0, il = elements.length; i < il; i++) {
    console.log(elements[i].innerHTML);
}