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-rw-r--r--src/ajax/xhr.js6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
index 91a71de8d..b18274c43 100644
--- a/src/ajax/xhr.js
+++ b/src/ajax/xhr.js
@@ -178,6 +178,12 @@ if ( jQuery.support.ajax ) {
// IE - #1450: sometimes returns 1223 when it should be 204
if ( status === 1223 ) {
status = 204;
+ // Various - #8177: a Not Modified response was received
+ // yet no conditional request headers was provided
+ } else if ( status === 304 &&
+ !headers[ "if-modified-since" ] &&
+ !headers[ "if-none-match" ] ) {
+ status = 200;
// Status 0 encompasses several cases
} else if ( !status ) {
// Cross-domain