Attribute hooks do not need to be attached in XML docs. Fixes #9568.

1 files changed, 17 insertions, 14 deletions

diff --git a/src/attributes.js b/src/attributes.js
index 5b68773c9..ce7b35021 100644
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -320,21 +320,23 @@ jQuery.extend({
 			notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
 
 		// Normalize the name if needed
-		name = notxml && jQuery.attrFix[ name ] || name;
+		if ( notxml ) {
+			name = jQuery.attrFix[ name ] || name;
 
-		hooks = jQuery.attrHooks[ name ];
+			hooks = jQuery.attrHooks[ name ];
 
-		if ( !hooks ) {
-			// Use boolHook for boolean attributes
-			if ( rboolean.test( name ) ) {
+			if ( !hooks ) {
+				// Use boolHook for boolean attributes
+				if ( rboolean.test( name ) ) {
 
-				hooks = boolHook;
+					hooks = boolHook;
 
-			// Use formHook for forms and if the name contains certain characters
-			} else if ( formHook && name !== "className" &&
-				(jQuery.nodeName( elem, "form" ) || rinvalidChar.test( name )) ) {
+				// Use formHook for forms and if the name contains certain characters
+				} else if ( formHook && name !== "className" &&
+					(jQuery.nodeName( elem, "form" ) || rinvalidChar.test( name )) ) {
 
-				hooks = formHook;
+					hooks = formHook;
+				}
 			}
 		}
 
@@ -465,10 +467,11 @@ jQuery.extend({
 		var ret, hooks,
 			notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
 
-		// Try to normalize/fix the name
-		name = notxml && jQuery.propFix[ name ] || name;
-		
-		hooks = jQuery.propHooks[ name ];
+		if ( notxml ) {
+			// Fix name and attach hooks
+			name = jQuery.propFix[ name ] || name;
+			hooks = jQuery.propHooks[ name ];
+		}
 
 		if ( value !== undefined ) {
 			if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {