https://therapiezentrum-feiser.de/files/1902235/style/js/jquery.plusanchor.js

1/*
2* PlusAnchor
3* A form component library
4* Version: "1.1.2"
5* Jamy Golden
6* https://github.com/JamyGolden/PlusAnchor
7* License: MIT
8*/
9(function($){
10
11    function scrollToEvent(base) {
12        return function(e) {
13            e.preventDefault();
14
15            var $this = $(this); // Anchor el
16            var href = $this.attr('href');
17            var $name = $('a[name="' + href.substring(1) + '"]');
18
19            if ( $(href).length ){
20
21                // onSlide callback
22                if ( base.options.onSlide && typeof( base.options.onSlide ) === 'function' ) {
23                    base.options.onSlide( base );
24                };
25
26                // End onSlide callback
27                base.$el.animate({
28                    scrollTop: $(href).offset().top + base.options.offsetTop
29                }, base.options.speed, base.options.easing);
30
31            } else if ( $name.length ){
32
33                // onSlide callback
34                if ( base.options.onSlide && typeof( base.options.onSlide ) === 'function' ) {
35                    base.options.onSlide( base );
36                };
37
38                // End onSlide callback
39                base.$el.animate({
40                    scrollTop: $name.offset().top + base.options.offsetTop
41                }, base.options.speed, base.options.easing);
42
43            }
44        }
45    }
46
47    $.plusAnchor = function(el, options){
48        // To avoid scope issues, use 'base' instead of 'this'
49        // to reference this class from internal events and functions.
50        var base = this;
51        var htmlEl = document.getElementsByTagName('html');
52        var bodyEl = document.body;
53        // If the user selects body, make sure to use 'html, body' for
54        // cross browser compatibility reasons
55        base.el  = el;
56        base.$el = (el === htmlEl || el === bodyEl) ? $('html, body') : $(el);
57        base.$el.data('plusAnchor', base); // Add a reverse reference to the DOM object
58
59        function _constructor() {
60			var anchorSelector = options.includeCssIndication ? '.js-plus-anchor' : 'a[href^="#"]';
61			
62            // Check for plusanchor disable
63            if (options === false) {
64                base.$el.find(anchorSelector).off('click.plusanchor');
65                return;
66            };
67
68            // Extend options with user preferences
69            base.options = $.extend({}, $.plusAnchor.defaults, options);
70
71            // onInit callback
72            if ( base.options.onInit && typeof( base.options.onInit ) === 'function' ) {
73                base.options.onInit( base );
74            };
75            // End onInit callback
76
77            if (!base.options.performance) {
78                base.$el.on('click', anchorSelector, scrollToEvent(base));
79            } else {
80                base.$el.find(anchorSelector).on('click.plusanchor', scrollToEvent(base));
81            }
82        }; // _constructor
83
84        // Run initializer
85        _constructor();
86    };
87
88    $.plusAnchor.defaults = {
89        easing: 'swing',   // String: Anything other than "swing" or "linear" requires the easing.js plugin
90        offsetTop: 0,      // Int: Top offset for anchor scrollto position. Can be positive or negative
91        speed: 1000,       // Int: The speed, in miliseconds, it takes to complete a slide
92        onInit: null,      // Function: Callback function on plugin initialize
93        onSlide: null,     // Function: Callback function that runs just before the page starts animating
94        performance: false, // Boolean: Toggles between click and delegate events.
95		includeCssIndication: false //Boolean: set to true to bind anchors with 'js-plus-anchor' CSS class name only
96    };
97
98    $.fn.plusAnchor = function(options){
99        return this.each(function(){
100            (new $.plusAnchor(this, options));
101        });
102    };
103})(jQuery);