JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li class="reveal">One<br />
        <a href="http://www.google.com" target="_blank">Google</a>
            <ul>
                <li>a</li>
                <li>b</li>
                <li>c</li>
        </ul>
    </li>
    <li class="reveal">Two<br />
        <a href="http://www.google.com" target="_blank">Google</a>
            <ul>
                <li>a</li>
                <li>b</li>
                <li>c</li>
        </ul>
    </li>
    <li class="reveal">Three<br />
        <a href="http://www.google.com" target="_blank">Google</a>
            <ul>
                <li>a</li>
                <li>b</li>
                <li>c</li>
        </ul>
    </li>
</ul>

CSS

ul ul { display: none; }

JavaScript

$(function () {
    $('.reveal').click(function() {
        $(this).children('ul').slideToggle();
    });
    
    $('.reveal a').click(function(event) {
        event.stopPropagation();
    });
});