https://www.bakersfieldcollege.edu/_resources/js/navigation.js

1$(function () {
2	'use strict';
3
4	function normalizePath(path) {
5		var normalized = decodeURIComponent(path || '/')
6			.split('?')[0]
7			.split('#')[0]
8			.replace(/\/+/g, '/')
9			.replace(/\/index\.(html?|pcf)$/i, '/')
10			.replace(/\.(html?|pcf)$/i, '')
11			.replace(/\/+$/, '');
12
13		return normalized || '/';
14	}
15
16	function getCurrentPaths() {
17		var paths = [];
18
19		// Normal live-page or preview URL.
20		if (window.location.pathname) {
21			paths.push(normalizePath(window.location.pathname));
22		}
23
24		// Canonical URL, if the template provides one.
25		var canonical = document.querySelector('link[rel="canonical"]');
26
27		if (canonical && canonical.href) {
28			try {
29				paths.push(normalizePath(new URL(canonical.href).pathname));
30			} catch (error) {
31				// Ignore malformed canonical URLs.
32			}
33		}
34
35		// Base URL, if the CMS preview supplies one.
36		var base = document.querySelector('base');
37
38		if (base && base.href) {
39			try {
40				paths.push(normalizePath(new URL(base.href).pathname));
41			} catch (error) {
42				// Ignore malformed base URLs.
43			}
44		}
45
46		return paths.filter(function (path, index, array) {
47			return array.indexOf(path) === index;
48		});
49	}
50
51	var currentPaths = getCurrentPaths();
52
53	$('ul[data-nav-path] li a[href]').each(function () {
54		var href = this.getAttribute('href');
55
56		if (!href || href.charAt(0) === '#') {
57			return;
58		}
59
60		var linkUrl;
61
62		try {
63			linkUrl = new URL(href, document.baseURI || window.location.href);
64		} catch (error) {
65			return;
66		}
67
68		var linkPath = normalizePath(linkUrl.pathname);
69
70		if (currentPaths.indexOf(linkPath) !== -1) {
71			$(this)
72				.attr('aria-current', 'page')
73				.addClass('active');
74		}
75	});
76});