JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    Click 1
    <li>1.1</li>
</ul>

<ul>
    Click 2
    <li>2.1</li>
</ul>

CSS

li{
display:none;
}

JavaScript

$(document).ready(function () {  
    $('ul').each(function(){
        $(this).click(function(){
           $('ul').closest('li').slideToggle(300);
        });
    }); 
});