From: John Resig <jeresig@gmail.com>
Date: Tue, 21 Sep 2010 19:22:34 +0000 (-0400)
Subject: Use a different workaround for detecting when Opera finds a status 304 page. Fixes... 
X-Git-Url: http://git.asbjorn.biz/?p=jquery.git;a=commitdiff_plain;h=ba9e0fc177841bd74cc5ea4e52f09cd87d747bf5

Use a different workaround for detecting when Opera finds a status 304 page. Fixes #6060.
---

diff --git a/src/ajax.js b/src/ajax.js
index 78d9b24..aa4e3ec 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -629,9 +629,11 @@ 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 a status of 0 for redirects -
+				// We can detect this by the fact that Opera also doesn't return any headers
+				xhr.status === 0 && !xhr.getAllResponseHeaders();
 		} catch(e) {}
 
 		return false;
@@ -651,7 +653,7 @@ 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 && !xhr.getAllResponseHeaders();
 	},
 
 	httpData: function( xhr, type, s ) {
diff --git a/test/data/notmodified.php b/test/data/notmodified.php
new file mode 100644
index 0000000..0309a6b
--- /dev/null
+++ b/test/data/notmodified.php
@@ -0,0 +1 @@
+<?php header('HTTP/1.0 304 Not Modified'); exit; ?>
diff --git a/test/unit/ajax.js b/test/unit/ajax.js
index 8e3c4b6..7f3f39a 100644
--- a/test/unit/ajax.js
+++ b/test/unit/ajax.js
@@ -68,6 +68,18 @@ test("jQuery.ajax() - error callbacks", function() {
 	});
 });
 
+test(".ajax() - 304", function() {
+	expect( 1 );
+	stop();
+
+	jQuery.ajax({
+		url: url("data/notmodified.php"),
+		success: function(){ ok(true, "304 ok"); },
+		error: function(){ ok(false, "304 not ok "); },
+		complete: function(xhr){ start(); }
+	});
+});
+
 test(".load()) - 404 error callbacks", function() {
 	expect( 6 );
 	stop();