https://gari-museum.ru/static/uil/export/project_mo_theme_short_02…/jquery-smooth-scroll.js?20260220222336

1(function ($) {
2
3    var DEBUG = false, is_pocess = false;
4
5    var is_mobile = false;
6    try {
7        document.createEvent('TouchEvent');
8        is_mobile = true;
9    }
10    catch (e) {
11    }
12
13    function easeInOutQuad(t, b, c, d) {
14        t /= d / 2;
15        if (t < 1) return c / 2 * t * t + b;
16        t--;
17        return -c / 2 * (t * (t - 2) - 1) + b;
18    }
19
20    function scrollTo(to, duration) {
21        if (is_pocess)
22            return false;
23
24        is_pocess = true;
25        var start = window.pageYOffset,
26            change = to - start,
27            currentTime = 0,
28            increment = 25;
29
30        if (is_mobile)
31            increment = increment * 3;
32
33        var animateScroll = function () {
34            currentTime += increment;
35            window.scrollTo(window.pageXOffset, easeInOutQuad(currentTime, start, change, duration));
36            if (currentTime < duration)
37                setTimeout(animateScroll, increment);
38        };
39        animateScroll();
40        setTimeout(function () {
41            window.scrollTo(window.pageXOffset, to);
42            is_pocess = false;
43        }, duration + increment);
44    }
45
46    var defaults = {
47        duration: 500
48    };
49
50    $.smoothScroll = function (to, params) {
51
52        var options = $.extend({}, defaults, params || {});
53
54        if (DEBUG) {
55            // console.group('jquery-smooth-scroll init');
56            console.log('to:        ' + to);
57            console.log('duration:  ' + options['duration']);
58            console.log('is_mobile: ' + is_mobile);
59            // console.groupEnd('jquery-smooth-scroll init');
60        }
61
62        if (options['duration'] === 0)
63            window.scrollTo(window.pageXOffset, to);
64        else
65            scrollTo(to, options['duration']);
66
67    };
68
69})(jQuery);