JSFiddle - React, Tailwind, and code Playground

HTML

<button id="pulsate">I want to pulsate!</button>

JavaScript

$('#pulsate').on('click', function () {
    pulsate(this); // Change here
});
   
function pulsate(element) { 
    $(element || this).closest("div.ui-btn").animate({ opacity: 0 }, 500, function() { $(this).closest("div.ui-btn").animate({ opacity: 1 }, 500, pulsate); }); 
}