Add a flag to verify if a browser supports some form of XHR request. Fixes #7030.

diff --git a/src/ajax.js b/src/ajax.js
index 52a5a22cc3187a68c40728e81f53191618cc6b75..78d9b24f1565f8913c3e8ae8f6bbba9a71802a09 100644 (file)
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -686,6 +686,9 @@ jQuery.extend( jQuery.ajax, {
 
 });
 
+// Does this browser support XHR requests?
+jQuery.support.ajax = !!jQuery.ajaxSettings.xhr();
+
 // For backwards compatibility
 jQuery.extend( jQuery.ajax );