X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fajax.js;h=6ea61eb21da55d0324065cbbda375c6823ea1b78;hb=238ac5a0aa25e7fb4fead7a56b92951817446127;hp=9195bcc89eb48d44cd0e34edfeccdfdb524d8618;hpb=fb48ae8e6cca25fd29ef2b1eb23e9efa7b0eef7c;p=jquery.git

diff --git a/src/ajax.js b/src/ajax.js
index 9195bcc..6ea61eb 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -195,6 +195,17 @@ jQuery.extend({
 	},
 
 	ajax: function( origSettings ) {
+		// IE8 leaks a lot when we've set abort, and IE6-8 a little
+		// when we have set onreadystatechange. Bug #6242
+		// XXX IE7 still leaks when abort is called, no matter what
+		// we do
+		function cleanup() {
+			// IE6 will throw an error setting xhr.abort
+			try {
+				xhr.abort = xhr.onreadystatechange = jQuery.noop;
+			} catch(e) {}
+		}
+
 		var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings),
 			jsonp, status, data, type = s.type.toUpperCase(), noContent = rnoContent.test(type);
 
@@ -403,13 +414,12 @@ jQuery.extend({
 
 				requestDone = true;
 				if ( xhr ) {
-					xhr.onreadystatechange = jQuery.noop;
+					cleanup();
 				}
 
 			// The transfer is complete and the data is available, or the request timed out
 			} else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) {
 				requestDone = true;
-				xhr.onreadystatechange = jQuery.noop;
 
 				status = isTimeout === "timeout" ?
 					"timeout" :
@@ -451,10 +461,7 @@ jQuery.extend({
 					xhr.abort();
 				}
 
-				// Stop memory leaks
-				if ( s.async ) {
-					xhr = null;
-				}
+				cleanup();
 			}
 		};
 
@@ -463,10 +470,11 @@ jQuery.extend({
 		try {
 			var oldAbort = xhr.abort;
 			xhr.abort = function() {
-				// xhr.abort in IE7 is not a native JS function
-				// and does not have a call property
-				if ( xhr && oldAbort.call ) {
-					oldAbort.call( xhr );
+				if ( xhr ) {
+					// oldAbort has no call property in IE7 so
+					// just do it this way, which works in all
+					// browsers
+					Function.prototype.call.call( oldAbort, xhr );
 				}
 
 				onreadystatechange( "abort" );