Adjust the return value of the tabIndex propHook to match the spec. Fixes #13752.

1 files changed, 7 insertions, 13 deletions

diff --git a/src/attributes.js b/src/attributes.js
index 0b9b06b31..549e95eb0 100644
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -414,20 +414,14 @@ jQuery.extend({
 		}
 
 		if ( value !== undefined ) {
-			if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
-				return ret;
-
-			} else {
-				return ( elem[ name ] = value );
-			}
+			return hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ?
+				ret :
+				( elem[ name ] = value );
 
 		} else {
-			if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
-				return ret;
-
-			} else {
-				return elem[ name ];
-			}
+			return hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ?
+				ret :
+				elem[ name ];
 		}
 	},
 
@@ -442,7 +436,7 @@ jQuery.extend({
 					parseInt( attributeNode.value, 10 ) :
 					rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
 						0 :
-						undefined;
+						-1;
 			}
 		}
 	}