JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" value="one" /><br/>
<input type="text" value="two" /><br/>
<input type="text" value="three" /><br/>
<p>Previous focus:</p>
<div id="prev"></div>

JavaScript

(function() {
    var prevFocus;
    $("input").focus(function() {
        if (typeof prevFocus  !== "undefined") {
            $("#prev").html(prevFocus.val());
        }
        prevFocus = $(this);
    });
})();