Merge branch 'master' of github.com:jquery/jquery

1 files changed, 5 insertions, 4 deletions

diff --git a/src/attributes.js b/src/attributes.js
index a76695b66..fd3e38ace 100644
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -136,7 +136,7 @@ jQuery.fn.extend({
 	},
 
 	val: function( value ) {
-		if ( value === undefined ) {
+		if ( !arguments.length ) {
 			var elem = this[0];
 
 			if ( elem ) {
@@ -209,9 +209,10 @@ jQuery.fn.extend({
 				val = value.call(this, i, self.val());
 			}
 
-			// Typecast each time if the value is a Function and the appended
-			// value is therefore different each time.
-			if ( typeof val === "number" ) {
+			// Treat null/undefined as ""; convert numbers to string
+			if ( val == null ) {
+				val = "";
+			} else if ( typeof val === "number" ) {
 				val += "";
 			}