JSFiddle - React, Tailwind, and code Playground

HTML

<div id="elt1" class="elt" val="text1">text1
    <div id="elt2" class="elt" val="text2">text2
        <div></div>

CSS

#elt1 {
    background-color: blue;
}
#elt2 {
    background-color: cyan;
}

JavaScript

$(document).ready(function () {
    $(".elt").mouseenter(function (e) {
        e.stopPropagation();
        alert($(this).attr('val'));
    });
})