JSFiddle - React, Tailwind, and code Playground
HTML
<p id="p1">Enter this paragraph.</p>
JavaScript
// jquery mouseenter and mouseleave event
$("#p1").mouseenter(function(){
alert("You entered p1!");
});
$("#p1").mouseleave(function(){
alert("Bye! You now leave p1!");
});
var alert = function (str) {
var st = document.createTextNode(str);
var p = document.createElement('p');
p.appendChild(st);
document.querySelector('body').appendChild(p);
}