Fixes comments per @rwldrn. Makes sure failing requests from local protocol yields...

diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
index 9569c7064992d27d3ee07d0d734e59e81f3e1b5d..72703a0b16ccb25b8a2a50bcd4f02c6ccf30c3d0 100644 (file)
--- a/src/ajax/xhr.js
+++ b/src/ajax/xhr.js
@@ -8,7 +8,8 @@ var xhrSupported = jQuery.ajaxSettings.xhr(),
        xhrSuccessStatus = {
                // file protocol always yields status code 0, assume 200
                0: 200,
-               // IE - #1450: sometimes returns 1223 when it should be 204
+               // Support: IE9
+               // #1450: sometimes IE returns 1223 when it should be 204
                1223: 204
        };
        
@@ -23,7 +24,6 @@ jQuery.ajaxTransport(function( options ) {
                        send: function( headers, complete ) {
                                var i,
                                        xhr = options.xhr();
-                               // Open the socket
                                xhr.open( options.type, options.url, options.async, options.username, options.password );
                                // Apply custom fields if provided
                                if ( options.xhrFields ) {
@@ -55,13 +55,18 @@ jQuery.ajaxTransport(function( options ) {
                                                        if ( type === "abort" ) {
                                                                xhr.abort();
                                                        } else if ( type === "error" ) {
-                                                               complete( xhr.status, xhr.statusText );
+                                                               complete(
+                                                                       // file protocol always yields status 0, assume 404
+                                                                       xhr.status || 404,
+                                                                       xhr.statusText
+                                                               );
                                                        } else {
                                                                complete(
                                                                        xhrSuccessStatus[ xhr.status ] || xhr.status,
                                                                        xhr.statusText,
-                                                                       // IE - #11426: When requesting binary data, IE9 will
-                                                                       // throw an exception on any attempt to access responseText
+                                                                       // Support: IE9
+                                                                       // #11426: When requesting binary data, IE9 will throw an exception
+                                                                       // on any attempt to access responseText
                                                                        typeof xhr.responseText === "string" ? {
                                                                                text: xhr.responseText
                                                                        } : undefined,
@@ -81,7 +86,6 @@ jQuery.ajaxTransport(function( options ) {
                                // handled in jQuery.ajax (so no try/catch here)
                                xhr.send( options.hasContent && options.data || null );
                        },
-
                        abort: function() {
                                if ( callback ) {
                                        callback();