X-Git-Url: http://jaekl.net/gitweb/?p=quanweb.git;a=blobdiff_plain;f=js%2FMain.js;h=5f253bcc1e9fe486362d1106232d40030dee82a5;hp=6ceac8256665e4fbd49b5aaaf3661ccf918d1d5f;hb=e2b95cefd1e34e652317fdf82595932c0bf0c6bb;hpb=32c817b6cf7484487c1160cec8a4b9e770b8404a

diff --git a/js/Main.js b/js/Main.js
index 6ceac82..5f253bc 100644
--- a/js/Main.js
+++ b/js/Main.js
@@ -1,5 +1,5 @@
-//QuanLib:  eBook Library
-//(C) 2017 by Christian Jaekl (cejaekl@yahoo.com)
+// QuanLib:  eBook Library
+// Copyright (C) 2017 by Christian Jaekl (cejaekl@yahoo.com)
 
 'use strict';
 
@@ -20,6 +20,16 @@ BooksView.init(BooksModel);
 PagingController.init(BooksModel);
 SearchController.init(BooksModel);
 
+if (Modernizr.fetch) {
+    console.log('quanweb:  browser feature check:  OK');
+}
+else {
+    // If we cared about supporting older browsers (at this point, IE11 and Adroid 4.x's built-in browser,
+    // neither of which is due to receive security patch support for much longer), then we would insert a 
+    // shim here to implement the fetch API.  But, in this case, we don't and won't.
+    alert('Sorry, this page will not work in your browser.\nPlease use a recent version of Chrome, Edge or Firefox instead.');
+}
+
 // ================
 // Global functions
 //