Issue 5385 - Create Site Header Component for Help Center

static/js/main.js

+(function(){
+  document.addEventListener("DOMContentLoaded", function()
+  {
+
+    // Change html class name from "no-js" to "js"
+    document.documentElement.className = "js";
+
+    // Toggle Navbar Collapse
+    function toggleNavbarCollapse()
+    {
+      var navbarCollapseEls = this.parentElement.getElementsByClassName("navbar-collapse");
+      for (var i = 0; i < navbarCollapseEls.length; i++)
+      {
+        navbarCollapseEls[i]
+          .classList.toggle("open")
+      }
+    }
+
+    var toggleNavbarCollapseEls = document.getElementsByClassName("toggle-navbar-collapse");
+    for (var i = 0; i < toggleNavbarCollapseEls.length; i++)
+    {
+      toggleNavbarCollapseEls[i]
+        .addEventListener("click", toggleNavbarCollapse, false);
+    }
+
+  }, false);
+}());