setRequestHeader IE9 CORS fix

ModuleLoader · Aug 12, 2015 · ae60fff · ae60fff
1 parent a136e59
commit ae60fff
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/system-fetch.js b/src/system-fetch.js
@@ -40,7 +40,8 @@
       };
       xhr.open("GET", url, true);
 
-      xhr.setRequestHeader('Accept', 'application/x-es-module */*');
+      if (xhr.setRequestHeader)
+        xhr.setRequestHeader('Accept', 'application/x-es-module */*');
 
       if (doTimeout)
         setTimeout(function() {