JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" /><img src="http://www.fct.ca/images/loading.gif" style="display: none; vertical-align: top;" />

CSS

input {padding: 12px;}

JavaScript

$(document).ready(function(){
    $("input").blur(function(){
        $(this).next("img").show();
        var a = $(this);
        setTimeout(function(){
            a.next("img").hide();
            a.val("AJAX Load Complete...");
        }, 1000);
    });
});