smooth-back-to-top-button.js?ver=1.1.15

js kingu.edu.ua collected 2026-09-29 10:45:36 UTC 1,029 bytes, 28 lines download raw bytes

1(function ($) {
2    "use strict";
3
4    jQuery(window).on('load', function () {
5
6        var progressPath = document.querySelector('.progress-wrap path');
7        var pathLength = progressPath.getTotalLength();
8
9        progressPath.style.transition = progressPath.style.WebkitTransition = 'none';
10        progressPath.style.strokeDasharray = pathLength + ' ' + pathLength;
11        progressPath.style.strokeDashoffset = pathLength;
12        progressPath.getBoundingClientRect();
13        progressPath.style.transition = progressPath.style.WebkitTransition = 'stroke-dashoffset 10ms linear';
14
15        var updateProgress = function () {
16            var scroll = jQuery(window).scrollTop();
17            var height = jQuery(document).height() - jQuery(window).height();
18            var progress = pathLength - (scroll * pathLength / height);
19            progressPath.style.strokeDashoffset = progress;
20        };
21
22        updateProgress();
23
24        jQuery(window).scroll(updateProgress);
25
26    });
27
28})(jQuery);

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