JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" id="myBtn" value="Click me!" />
<img src="http://static.wildberries.ru/i/loading.gif" id="loader"/>

CSS

#loader {
    position: absolute;    
    left: 24px;
    display: none;
}
#myBtn {
    width: 64px;
    height: 32px;    
}

JavaScript

$("#myBtn").on("click", function () {
    $(this).hide();
    $("#loader").show();
});

$("#loader").on("click", function () {
    $(this).hide();
    $("#myBtn").show();
});