JSFiddle - React, Tailwind, and code Playground
HTML
<div id="div"></div>
JavaScript
jQuery.fn.test = function() {
alert("done");
return this.each()};
$('#div').html('blub').test();
<div id="div"></div>
jQuery.fn.test = function() {
alert("done");
return this.each()};
$('#div').html('blub').test();