Landing pull request 463. Fixes #9572. Don't camelize the `-ms-` prefix because Microsoft didn't. A Fixes #9572.

More Details:
 - https://github.com/jquery/jquery/pull/463
 - http://bugs.jquery.com/ticket/9572

2 files changed, 11 insertions, 5 deletions

diff --git a/src/core.js b/src/core.js
index 7a77ae132..694f884d6 100644
--- a/src/core.js
+++ b/src/core.js
@@ -47,6 +47,7 @@ var jQuery = function( selector, context ) {
 
 	// Matches dashed string for camelizing
 	rdashAlpha = /-([a-z]|[0-9])/ig,
+	rmsPrefix = /^-ms-/,
 
 	// Used by jQuery.camelCase as callback to replace()
 	fcamelCase = function( all, letter ) {
@@ -590,10 +591,10 @@ jQuery.extend({
 		}
 	},
 
-	// Converts a dashed string to camelCased string;
-	// Used by both the css and data modules
+	// Convert dashed to camelCase; used by the css and data modules
+	// Microsoft forgot to hump their vendor prefix (#9572)
 	camelCase: function( string ) {
-		return string.replace( rdashAlpha, fcamelCase );
+		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
 	},
 
 	nodeName: function( elem, name ) {
diff --git a/test/unit/core.js b/test/unit/core.js
index 8c285f6dd..d47920501 100644
--- a/test/unit/core.js
+++ b/test/unit/core.js
@@ -1129,10 +1129,15 @@ test("jQuery.camelCase()", function() {
 
 	var tests = {
 		"foo-bar": "fooBar",
-		"foo-bar-baz": "fooBarBaz"
+		"foo-bar-baz": "fooBarBaz",
+		"girl-u-want": "girlUWant",
+		"the-4th-dimension": "the4thDimension",
+		"-o-tannenbaum": "OTannenbaum",
+		"-moz-illa": "MozIlla",
+		"-ms-take": "msTake"
 	};
 
-	expect(2);
+	expect(7);
 
 	jQuery.each( tests, function( key, val ) {
 		equal( jQuery.camelCase( key ), val, "Converts: " + key + " => " + val );