https://iafor.org/wp-content/themes/lenscap/js/sticky.js?ver=4.0.0

1/*!
2Waypoints Sticky Element Shortcut - 4.0.0
3Copyright © 2011-2015 Caleb Troughton
4Licensed under the MIT license.
5https://github.com/imakewebthings/waypoints/blog/master/licenses.txt
6*/
7(function() {
8  'use strict'
9
10  var $ = window.jQuery
11  var Waypoint = window.Waypoint
12
13  /* http://imakewebthings.com/waypoints/shortcuts/sticky-elements */
14  function Sticky(options) {
15    this.options = $.extend({}, Waypoint.defaults, Sticky.defaults, options)
16    this.element = this.options.element
17    this.$element = $(this.element)
18    this.createWrapper()
19    this.createWaypoint()
20  }
21
22  /* Private */
23  Sticky.prototype.createWaypoint = function() {
24    var originalHandler = this.options.handler
25
26    this.waypoint = new Waypoint($.extend({}, this.options, {
27      element: this.wrapper,
28      handler: $.proxy(function(direction) {
29        var shouldBeStuck = this.options.direction.indexOf(direction) > -1
30        var wrapperHeight = shouldBeStuck ? this.$element.outerHeight(true) : ''
31
32        this.$wrapper.height(wrapperHeight)
33        this.$element.toggleClass(this.options.stuckClass, shouldBeStuck)
34
35        if (originalHandler) {
36          originalHandler.call(this, direction)
37        }
38      }, this)
39    }))
40  }
41
42  /* Private */
43  Sticky.prototype.createWrapper = function() {
44    if (this.options.wrapper) {
45      this.$element.wrap(this.options.wrapper)
46    }
47    this.$wrapper = this.$element.parent()
48    this.wrapper = this.$wrapper[0]
49  }
50
51  /* Public */
52  Sticky.prototype.destroy = function() {
53    if (this.$element.parent()[0] === this.wrapper) {
54      this.waypoint.destroy()
55      this.$element.removeClass(this.options.stuckClass)
56      if (this.options.wrapper) {
57        this.$element.unwrap()
58      }
59    }
60  }
61
62  Sticky.defaults = {
63    wrapper: '<div class="sticky-wrapper" />',
64    stuckClass: 'stuck',
65    direction: 'down right'
66  }
67

68  Waypoint.Sticky = Sticky
69}())
70;