From 75d4b59a4c72ab6fde3aa1e815947639213ea9da Mon Sep 17 00:00:00 2001
From: Ben Newman 
Date: Wed, 30 Jun 2010 22:25:17 +0000
Subject: [PATCH] Treat an xhr.status of 0 as successful only in Opera, where 0 really means 304.  In Chrome Mac, for example, an xhr.status of 0 means an error occurred.

---
 src/ajax.js |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/ajax.js b/src/ajax.js
index 2c4f13c..42b74cf 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -627,9 +627,10 @@ jQuery.extend( jQuery.ajax, {
 		try {
 			// IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450
 			return !xhr.status && location.protocol === "file:" ||
-				// Opera returns 0 when status is 304
 				( xhr.status >= 200 && xhr.status < 300 ) ||
-				xhr.status === 304 || xhr.status === 1223 || xhr.status === 0;
+				( xhr.status === 304 || xhr.status === 1223 ||
+				  // Opera returns 0 when status is 304
+				  ( xhr.status === 0 && jQuery.browser.opera ) );
 		} catch(e) {}
 
 		return false;
@@ -649,7 +650,7 @@ jQuery.extend( jQuery.ajax, {
 		}
 
 		// Opera returns 0 when status is 304
-		return xhr.status === 304 || xhr.status === 0;
+		return xhr.status === 304 || ( xhr.status === 0 && jQuery.browser.opera );
 	},
 
 	httpData: function( xhr, type, s ) {
-- 
1.5.4.3