jQuery addClass example
Change class name on click in jQuery
HTML
<button id='button1'>
btn
</button>
CSS
.spacer{
transition: 0.3s !important;
padding-right: 3.1rem !important;
}
.spinner{
border: 5px solid #f3f3f3;
border-radius: 50%;
border-top: 5px solid #3498db;
width: 10px;
height: 10px;
animation: spin 2s linear infinite;
}
JavaScript
$("#button1").on("click", function(){
$(this).addClass("spacer").addClass("spinner");
});