https://aspireyouth.com/wp-content/themes/levelup/assets/vendor/scrollspy.js?ver=2.0.11

1
2+function ($) {
3    'use strict';
4
5    function ScrollSpy(element, options) {
6        var process  = $.proxy(this.process, this);
7
8        this.$body          = $('body');
9        this.$scrollElement = $(element).is('body') ? $(window) : $(element);
10        this.options        = $.extend({}, ScrollSpy.DEFAULTS, options);
11        this.selector       = (this.options.target || '') + ' li > a';
12        this.offsets        = [];
13        this.targets        = [];
14        this.activeTarget   = null;
15        this.scrollHeight   = 0;
16
17        this.$scrollElement.on('scroll.bs.scrollspy', process);
18        this.refresh();
19        this.process();
20    }
21
22    ScrollSpy.VERSION  = '3.3.2';
23
24    ScrollSpy.DEFAULTS = {
25        offset: 10
26    };
27
28    ScrollSpy.prototype.getScrollHeight = function () {
29        return this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight);
30    };
31
32    ScrollSpy.prototype.refresh = function () {
33        var offsetMethod = 'offset';
34        var offsetBase   = 0;
35
36        if (!$.isWindow(this.$scrollElement[0])) {
37            offsetMethod = 'position';
38            offsetBase   = this.$scrollElement.scrollTop();
39        };
40
41        this.offsets = [];
42        this.targets = [];
43        this.scrollHeight = this.getScrollHeight();
44
45        var self     = this;
46
47        this.$body
48            .find(this.selector)
49            .map(function () {
50                var $el   = $(this);
51                var href  = $el.data('target') || $el.attr('href');
52                var $href = /^#./.test(href) && $(href);
53
54                return ($href
55                    && $href.length
56                    && $href.is(':visible')
57                    && [[$href[offsetMethod]().top + offsetBase, href]]) || null;
58            })
59            .sort(function (a, b) { return a[0] - b[0]; })
60            .each(function () {
61                self.offsets.push(this[0]);
62                self.targets.push(this[1]);
63            });
64    };
65
66    ScrollSpy.prototype.process = function () {
67        var scrollTop    = this.$scrollElement.scrollTop() + this.options.offset;
68        var scrollHeight = this.getScrollHeight();
69        var maxScroll    = this.options.offset + scrollHeight - this.$scrollElement.height();
70        var offsets      = this.offsets;
71        var targets      = this.targets;
72        var activeTarget = this.activeTarget;
73        var i;
74
75        if (this.scrollHeight != scrollHeight) {
76            this.refresh();
77        };
78
79        if (scrollTop >= maxScroll) {
80            return activeTarget != (i = targets[targets.length - 1]) && this.activate(i);
81        };
82
83        if (activeTarget && scrollTop < offsets[0]) {
84            this.activeTarget = null;
85            return this.clear();
86        };
87
88        for (i = offsets.length; i--;) {
89            activeTarget != targets[i]
90            && scrollTop >= offsets[i]
91            && (!offsets[i + 1] || scrollTop <= offsets[i + 1])
92            && this.activate(targets[i]);
93        };
94    };
95
96    ScrollSpy.prototype.activate = function (target) {
97        this.activeTarget = target;
98
99        this.clear();
100        var $current_href = window.location.href.split( '#' ),
101            $current_path = ( $current_href[0].charAt( $current_href[0].length - 1 ) == '/' ) ? $current_href[0] : $current_href[0] + '/';
102
103        var selector = this.selector +
104            '[data-target="' + target + '"],' +
105            this.selector + '[href="' + target + '"],' +
106            this.selector + '[href="' + $current_path + target + '"]';
107
108        var active = $(selector)
109            .parents('li')
110            .addClass('current-menu-item');
111
112        if (active.parent('.sub-menu').length) {
113            active = active
114                .closest('li.fusion-dropdown-menu')
115                .addClass('current-menu-item');
116        };
117
118        active.trigger('activate.bs.scrollspy');
119    };
120
121    ScrollSpy.prototype.clear = function () {
122        $(this.selector)
123            .parentsUntil(this.options.target, '.current-menu-item')
124            .removeClass('current-menu-item');
125
126        $(this.selector).parentsUntil(this.options.target, '.current-menu-parent').removeClass( 'current-menu-parent' );
127
128    };
129
130    function Plugin(option) {
131        return this.each(function () {
132            var $this   = $(this);
133            var data    = $this.data('bs.scrollspy');
134            var options = typeof option == 'object' && option;
135
136            if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options)));
137            if (typeof option == 'string') data[option]();
138        });
139    };
140
141    var old = $.fn.scrollspy;
142
143    $.fn.scrollspy             = Plugin;
144    $.fn.scrollspy.Constructor = ScrollSpy;
145
146    $.fn.scrollspy.noConflict = function () {
147        $.fn.scrollspy = old;
148        return this;
149    };
150
151}(jQuery);