JSFiddle - React, Tailwind, and code Playground

HTML

<p class="xyz-title">
        <a href="http://www.youtube.com/embed/xyz">
            <span class="field-content">Title here</span>
        </a>
    </p>

JavaScript

var href = document.getElementsByClassName('xyz-title')[0].getElementsByTagName('a')[0].href;
alert(href);