Skip to main content Accessibility Feedback


Emit a custom event.

Works in all modern browsers, but requires the CustomEvent polyfill for IE support.

 * Emit a custom event
 * (c) 2019 Chris Ferdinandi, MIT License,
 * @param  {String} type   The event type
 * @param  {Node}   elem   The element to attach the event to
 * @param  {Object} detail Any details to pass along with the event
var emitEvent = function (type, elem, detail) {

	// Make sure there's an event type
	if (!type) return;

	// Variables
	elem = elem || window;
	detail = detail || {};

	// Create a new event
	var event = new CustomEvent(type, {
		bubbles: true,
		cancelable: true,
		detail: detail

	// Dispatch the event