JSFiddle - React, Tailwind, and code Playground

by pertrai1

HTML

<div id="main">
    <h1>This is the header</h1>
    <h2>This is the second header</h2>
    <p>This is the paragraph</p>
</div>

JavaScript

function countTags(n) {
    var numtags = 0;
    if (n.nodeType == 1)
        numtags++;
    var children = n.childNodes;
    for (var i=0; i < children.length; i++) {
        numtags += countTags(children[i]);
    }
    return numtags;
}
alert ('This document has ' + countTags(document) + ' tags');