JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box a">Box a</div>
<div class="box b">Box b</div>
<div id="results-current"></div>
<div id="results-prev"></div>

CSS

.box {
    width: 150px;
    height: 150px;
    background: skyblue;
    color: white;
    border: 1px solid black;
    margin-bottom: 20px;
}

JavaScript

var currentElement,
    prevElement,
    resultsPrev = $("#results-prev"),
    resultsCurrent = $("#results-current");

$(".box").hover(function(e) {
    currentElement = $(e.currentTarget).text()
    resultsCurrent.text('Current Element: ' + currentElement);
}, function(e) {
    prevElement = $(e.currentTarget).text();
    resultsPrev.text('Previous Element: ' + prevElement);
});