Fixes #11426: getting the responseText of an xhr should be tried/caught because of IE's inability to give access to binary data. Unit test added.

1 files changed, 7 insertions, 1 deletions

diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
index a87c32392..013863d4e 100644
--- a/src/ajax/xhr.js
+++ b/src/ajax/xhr.js
@@ -148,7 +148,13 @@ if ( jQuery.support.ajax ) {
 									if ( xml && xml.documentElement /* #4958 */ ) {
 										responses.xml = xml;
 									}
-									responses.text = xhr.responseText;
+
+									// When requesting binary data, IE6-9 will throw an exception
+									// on any attempt to access responseText (#11426)
+									try {
+										responses.text = xhr.responseText;
+									} catch( _ ) {
+									}
 
 									// Firefox throws an exception when accessing
 									// statusText for faulty cross-domain requests