JSFiddle - React, Tailwind, and code Playground

HTML

<div class="ball" style="background:red;width:100px;height:100px">
    
</div>

<input type="button" value="Click Me" id="btn"/>

JavaScript

$(function(){
    $("#btn").bind("click", function(){
        alert($(".ball").css("visibility"));
        if($(".ball").css("visibility") == "visible") { 
           $(".ball").css({ 'visibility': 'hidden'}); 
        } else { 
            $(".ball").css({ 'visibility': 'visible'}); 
        }
    });
});