Add Google Tag Manager

Author: maartenba

src/Pages/Index.cshtml

@@ -5,6 +5,12 @@
 @using Duende.IdentityServer.Models
 @model IdentityServerHost.Pages.Home.Index
 
+<!-- Google Tag Manager (noscript) -->
+<noscript>
+    <iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MMR39D3G"
+            height="0" width="0" style="display:none;visibility:hidden"></iframe>
+</noscript>
+<!-- End Google Tag Manager (noscript) -->
 <div class="welcome-page">
     <h1>
         <img src="~/duende-logo.svg" class="logo">
@@ -203,6 +209,15 @@
 
 @section scripts
 {
+    <!-- Google Tag Manager -->
+    <script>
+        (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+                new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+            j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+            'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+        })(window,document,'script','dataLayer','GTM-MMR39D3G');</script>
+    <!-- End Google Tag Manager -->
+
     <script src="~/lib/clipboardjs/dist/clipboard.min.js"></script>
     <script>
         $('.clipboard').tooltip({