use jsdelivr

Author: SheetJSDev

assets/js/sheetjsw.js

@@ -1,4 +1,4 @@
-importScripts('//unpkg.com/xlsx/dist/xlsx.full.min.js');
+importScripts('//cdn.jsdelivr.net/npm/xlsx/dist/xlsx.full.min.js');
 postMessage({t:'ready'});
 onmessage = function(evt) {
   var v;

index.html

@@ -59,7 +59,7 @@ <h3>Follow us on Twitter <a href="https://twitter.com/SheetJS">@SheetJS</a></h3>
     </div>
 
     <script src="assets/js/shim.js"></script>
-    <script src="//unpkg.com/xlsx/dist/xlsx.full.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/xlsx/dist/xlsx.full.min.js"></script>
     <script src="assets/js/dropsheet.js"></script>
     <script src="assets/js/main.js"></script>
 

override_range.html

@@ -59,7 +59,7 @@ <h3>Follow us on Twitter <a href="https://twitter.com/SheetJS">@SheetJS</a></h3>
     </div>
 
     <script src="assets/js/shim.js"></script>
-    <script src="//unpkg.com/xlsx/dist/xlsx.full.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/xlsx/dist/xlsx.full.min.js"></script>
     <script src="assets/js/dropsheet_override_range.js"></script>
     <script src="assets/js/main.js"></script>