Ajax: Integrated native datatype, for XHR2 rich responseType support

src/ajax.js

@@ -332,7 +332,8 @@ jQuery.extend({
 		responseFields: {
 			xml: "responseXML",
 			text: "responseText",
-			json: "responseJSON"
+			json: "responseJSON",
+			native: "responseNative"
 		},
 
 		// Data converters
@@ -349,7 +350,10 @@ jQuery.extend({
 			"text json": jQuery.parseJSON,
 
 			// Parse text as xml
-			"text xml": jQuery.parseXML
+			"text xml": jQuery.parseXML,
+
+			// Don't convert a native response
+			"* native": true
 		},
 
 		// For options that shouldn't be deep extended:

src/ajax/xhr.js

@@ -43,7 +43,8 @@ jQuery.ajaxTransport(function( options ) {
 			send: function( headers, complete ) {
 				var i,
 					xhr = options.xhr(),
-					id = ++xhrId;
+					id = ++xhrId,
+					responses = {};
 
 				xhr.open( options.type, options.url, options.async, options.username, options.password );
 
@@ -89,15 +90,25 @@ jQuery.ajaxTransport(function( options ) {
 									xhr.statusText
 								);
 							} else {
+								// Verify the responseType attribute to avoid InvalidStateError Exception (XHR2 Spec)
+								// Support: IE9
+								// Accessing binary-data responseText throws an exception
+								// (#11426)
+								if ( (!xhr.responseType || xhr.responseType === "text") &&
+										typeof xhr.responseText === "string" ) {
+									responses.text = xhr.responseText;
+								}
+
+								// The native response associated with the responseType
+								// Stored in the xhr.response attribute (XHR2 Spec)
+								if ( xhr.response ) {
+									responses.native = xhr.response;
+								}
+
 								complete(
 									xhrSuccessStatus[ xhr.status ] || xhr.status,
 									xhr.statusText,
-									// Support: IE9
-									// Accessing binary-data responseText throws an exception
-									// (#11426)
-									typeof xhr.responseText === "string" ? {
-										text: xhr.responseText
-									} : undefined,
+									responses,
 									xhr.getAllResponseHeaders()
 								);
 							}

test/data/native.txt

@@ -0,0 +1 @@
+0123

test/unit/ajax.js

@@ -1999,6 +1999,29 @@ module( "ajax", {
 		).always( start );
 	});
 
+	ajaxTest( "jQuery.ajax() - Native datatype", 8, [{
+		url: url("data/native.bin"),
+		xhrFields: {
+			responseType: "arraybuffer"
+		},
+		success: function( data, status, jqXHR ) {
+			strictEqual( data, jqXHR.responseNative, "The responseNative attribute contains the response" );
+			ok( data instanceof ArrayBuffer, "The data retrieved is an ArrayBuffer instance" );
+			var array = new Uint8Array( data );
+			strictEqual( array.length, 4, "Check for response length" );
+			deepEqual( [array[0], array[1], array[2], array[3]], [0, 1 ,2 , 3], "Check for response content" );
+		}
+	}, {
+		url: url("data/native.txt"),
+		dataType: "native",
+		success: function( data, status, jqXHR ) {
+			strictEqual( data, jqXHR.responseNative, "The responseNative attribute contains the response" );
+			ok( typeof data === "string", "The data retrieved is a string" );
+			strictEqual( data.length, 5, "Check for response length" );
+			strictEqual( data, "0123\n", "Check for response content" );
+		}
+	}]);
+
 //----------- jQuery.active
 
 	test( "jQuery.active", 1, function() {