JSFiddle - React, Tailwind, and code Playground
HTML
<div>1</div>
<div>2</div>
JavaScript
$("div").on('mouseover',function(e){$("body").append(e.which)})
<div>1</div>
<div>2</div>
$("div").on('mouseover',function(e){$("body").append(e.which)})