add .current to the current link

src/includes/docs/head.html

@@ -7,4 +7,16 @@
 {{end}}
 <script type="text/javascript">window.CaddyfileDirectives = {{$directives | toJson}};</script>
 <script src="/resources/js/jquery-3.4.1.min.js"></script>
-<script src="/resources/js/docs.js"></script>
+<script src="/resources/js/docs.js"></script>
+<script type="text/javascript">
+	$(function(){
+		var current = location.pathname;
+		$('header > nav a').each(function(){
+			var $this = $(this);
+			// if the current path is like this link, make it active
+			if (current.indexOf($this.attr('href')) !== -1) {
+				$this.addClass('current');
+			}
+		})
+	})
+</script>

src/includes/header-nav.html

@@ -1,4 +1,3 @@
-<!--TODO: add class="current" to the current link-->
 <nav>
 	<div id="search"></div>
 	<a href="/v2">v2 <span class="new">new</span></a>