jQuery .on() alternative in pure javascript (this handles events on dynamically added elements) 😎

jquery.on.js

/**
* @param {string} eventType
* @param {string} selector
* @param {function} callback
*/
function on(eventType, selector, callback) {
  document.body.addEventListener(eventType, function (event) {
    if (event.target.matches(selector)) {
      callback.call(event.target);
    }
  });
}


var 
  selector = '.my-element',
  eventType = 'click';


on('click', '.my-element', function () {
  alert('Muaha!');
});