https://chrch.org/wordpress/wp-content/themes/jooc_tk/includes/js/bootstrap-toc.min.js?ver=7.1.2

1/*!
2 * Bootstrap Table of Contents v<%= version %> (http://afeld.github.io/bootstrap-toc/)
3 * Copyright 2015 Aidan Feldman
4 * Licensed under MIT (https://github.com/afeld/bootstrap-toc/blob/gh-pages/LICENSE.md) */
5(function($) {
6  'use strict';
7
8  window.Toc = {
9    helpers: {
10      // return all matching elements in the set, or their descendants
11      findOrFilter: function($el, selector) {
12        // http://danielnouri.org/notes/2011/03/14/a-jquery-find-that-also-finds-the-root-element/
13        // http://stackoverflow.com/a/12731439/358804
14        var $descendants = $el.find(selector);
15        return $el.filter(selector).add($descendants).filter(':not([data-toc-skip])');
16      },
17
18      generateUniqueIdBase: function(el) {
19        var text = $(el).text();
20        var anchor = text.trim().toLowerCase().replace(/[^A-Za-z0-9]+/g, '-');
21        return anchor || el.tagName.toLowerCase();
22      },
23
24      generateUniqueId: function(el) {
25        var anchorBase = this.generateUniqueIdBase(el);
26        for (var i = 0; ; i++) {
27          var anchor = anchorBase;
28          if (i > 0) {
29            // add suffix
30            anchor += '-' + i;
31          }
32          // check if ID already exists
33          if (!document.getElementById(anchor)) {
34            return anchor;
35          }
36        }
37      },
38
39      generateAnchor: function(el) {
40        if (el.id) {
41          return el.id;
42        } else {
43          var anchor = this.generateUniqueId(el);
44          el.id = anchor;
45          return anchor;
46        }
47      },
48
49      createNavList: function() {
50        return $('<ul class="nav"></ul>');
51      },
52
53      createChildNavList: function($parent) {
54        var $childList = this.createNavList();
55        $parent.append($childList);
56        return $childList;
57      },
58
59      generateNavEl: function(anchor, text) {
60        var $a = $('<a></a>');
61        $a.attr('href', '#' + anchor);
62        $a.text(text);
63        var $li = $('<li></li>');
64        $li.append($a);
65        return $li;
66      },
67
68      generateNavItem: function(headingEl) {
69        var anchor = this.generateAnchor(headingEl);
70        var $heading = $(headingEl);
71        var text = $heading.data('toc-text') || $heading.text();
72        return this.generateNavEl(anchor, text);
73      },
74
75      // Find the first heading level (`<h1>`, then `<h2>`, etc.) that has more than one element. Defaults to 1 (for `<h1>`).
76      getTopLevel: function($scope) {
77        for (var i = 1; i <= 6; i++) {
78          var $headings = this.findOrFilter($scope, 'h' + i);
79          if ($headings.length > 1) {
80            return i;
81          }
82        }
83
84        return 1;
85      },
86
87      // returns the elements for the top level, and the next below it
88      getHeadings: function($scope, topLevel) {
89        var topSelector = 'h' + topLevel;
90
91        var secondaryLevel = topLevel + 1;
92        var secondarySelector = 'h' + secondaryLevel;
93
94        return this.findOrFilter($scope, topSelector + ',' + secondarySelector);
95      },
96
97      getNavLevel: function(el) {
98        return parseInt(el.tagName.charAt(1), 10);
99      },
100
101      populateNav: function($topContext, topLevel, $headings) {
102        var $context = $topContext;
103        var $prevNav;
104
105        var helpers = this;
106        $headings.each(function(i, el) {
107          var $newNav = helpers.generateNavItem(el);
108          var navLevel = helpers.getNavLevel(el);
109
110          // determine the proper $context
111          if (navLevel === topLevel) {
112            // use top level
113            $context = $topContext;
114          } else if ($prevNav && $context === $topContext) {
115            // create a new level of the tree and switch to it
116            $context = helpers.createChildNavList($prevNav);
117          } // else use the current $context
118
119          $context.append($newNav);
120
121          $prevNav = $newNav;
122        });
123      },
124
125      parseOps: function(arg) {
126        var opts;
127        if (arg.jquery) {
128          opts = {
129            $nav: arg
130          };
131        } else {
132          opts = arg;
133        }
134        opts.$scope = opts.$scope || $(document.body);
135        return opts;
136      }
137    },
138
139    // accepts a jQuery object, or an options object
140    init: function(opts) {
141      opts = this.helpers.parseOps(opts);
142
143      // ensure that the data attribute is in place for styling
144      opts.$nav.attr('data-toggle', 'toc');
145
146      var $topContext = this.helpers.createChildNavList(opts.$nav);
147      var topLevel = this.helpers.getTopLevel(opts.$scope);
148      var $headings = this.helpers.getHeadings(opts.$scope, topLevel);
149      this.helpers.populateNav($topContext, topLevel, $headings);
150    }
151  };
152
153  $(function() {
154    $('nav[data-toggle="toc"]').each(function(i, el) {

155      var $nav = $(el);
156      Toc.init($nav);
157    });
158  });
159})(jQuery);