JSFiddle - React, Tailwind, and code Playground

by Tan

HTML

<h1>This is a Heading</h1>

<h2>This is a SubHeading</h2>

<h2>This is a SubHeading</h2>

JavaScript

var h1s = document.getElementsByTagName("h1");

for (var i = 0; i < h1s.length; i++) {
var h1 = h1s[i];
h1.innerHTML += "<span style='font-size:12px;color:red;'> H1 TAG</span>"
}

var h2s = document.getElementsByTagName("h2");

for (var i = 0; i < h2s.length; i++) {
var h2 = h2s[i];
h2.innerHTML += "<span style='font-size:12px;color:green;'> H2 TAG</span>"
}