JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

JavaScript

(function($) {

        var origAppend = $.fn.append;

        $.fn.append = function () {
            return origAppend.apply(this, arguments).trigger("append");
        };
    })(jQuery);

    $("div").bind("append", function() { alert('Hello, world!'); });

    $("div").append("<span>");