JSFiddle - React, Tailwind, and code Playground
HTML
<button type="submit" class="btn btn-primary form-sc-submit">Contact me</button>
JavaScript
(function(){
setTimeout(function() {
var button = document.querySelector('button[type=submit], .btn .btn-primary .form-sc-submit');
button.addEventListener('click', function(){
alert('you clicked');
});
}, 2000);
}());