JSFiddle - React, Tailwind, and code Playground

by David Thomas

HTML

<ul>
    <li>            
        <label for="firstName"  class="mainLabel">First Name : </label>                                 
        <input type="text" name="firstName" id="firstName"/>                                    
        <span>This must be filled</span>
    </li>
</ul>

JavaScript

var firstname = document.getElementsByTagName('input')[0],
    parentHTML = firstName.parentNode.innerHTML;
parentHTML = parentHTML.replace(/>\s+</g, "><");
firstName.parentNode.innerHTML = parentHTML;

console.log(firstname, parentHTML);