load bottomnav from js

assets/global.js

@@ -0,0 +1,9 @@
+const parser = new DOMParser();
+
+fetch("/_bottomnav.html")
+.then(response => response.text())
+.then(text => {
+    const bottomNav = parser.parseFromString(text, "text/html");
+
+    document.body.appendChild(bottomNav.getElementById("bottomnav"));
+});