demo.js

/* ========================================================================
 * Bootstrap: alert.js v3.1.1
 * http://getbootstrap.com/javascript/#alerts
 * ========================================================================
 * Copyright 2011-2014 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */


+function ($) {
	'use strict';

	// ALERT CLASS DEFINITION
	// ======================

	var dismiss = '[data-dismiss="alert"]'
	var Alert = function (el) {
		$(el).on('click', dismiss, this.close)
	}

	Alert.prototype.close = function (e) {
		var $this = $(this)
		var selector = $this.attr('data-target')

		if (!selector) {
			selector = $this.attr('href')
			selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
		}

		var $parent = $(selector)

		if (e) e.preventDefault()

		if (!$parent.length) {
			$parent = $this.hasClass('alert') ? $this : $this.parent()
		}

		$parent.trigger(e = $.Event('close.bs.alert'))

		if (e.isDefaultPrevented()) return

		$parent.removeClass('in')

		function removeElement() {
			$parent.trigger('closed.bs.alert').remove()
		}

		$.support.transition && $parent.hasClass('fade') ?
			$parent
				.one($.support.transition.end, removeElement)
				.emulateTransitionEnd(150) :
			removeElement()
	}

}