JSFiddle - React, Tailwind, and code Playground

HTML

<div id='button'>hover me</div>

JavaScript

$('#button').hover(function() {
            
            $('#newElement').remove();
            
            var $myNewElement = $('<div id="newElement">new Element</div>');

            $('body').append($myNewElement);

            $myNewElement.css({color:'red'});
        },
        function() {
            var $newReferenceToElement = $('#newElement');

            $newReferenceToElement.css({color:'blue'});
        });