X-Git-Url: http://git.asbjorn.it/?a=blobdiff_plain;f=src%2Fcore.js;h=5c37858a4803c5d86e7503fe6b9c11f0d27ebd77;hb=f38648c7cd3a37f4070b77b2c92151f68aa66fef;hp=a11ceb430dbc160459d1a9ebc3800b22dfd5b2ff;hpb=ea7837776022fe9f2ccdf00ede30728e6f24d919;p=jquery.git

diff --git a/src/core.js b/src/core.js
index a11ceb4..5c37858 100644
--- a/src/core.js
+++ b/src/core.js
@@ -47,20 +47,16 @@ jQuery.fn = jQuery.prototype = {
 				else {
 					var elem = document.getElementById( match[3] );
 
-					// Make sure an element was located
-					if ( elem ){
-						// Handle the case where IE and Opera return items
-						// by name instead of ID
-						if ( elem.id != match[3] )
-							return jQuery().find( selector );
-
-						// Otherwise, we inject the element directly into the jQuery object
-						var ret = jQuery( elem );
-						ret.context = document;
-						ret.selector = selector;
-						return ret;
-					}
-					selector = [];
+					// Handle the case where IE and Opera return items
+					// by name instead of ID
+					if ( elem && elem.id != match[3] )
+						return jQuery().find( selector );
+
+					// Otherwise, we inject the element directly into the jQuery object
+					var ret = jQuery( elem || [] );
+					ret.context = document;
+					ret.selector = selector;
+					return ret;
 				}
 
 			// HANDLE: $(expr, [context])
@@ -621,8 +617,8 @@ jQuery.extend({
 
 	// check if an element is in a (or is an) XML document
 	isXMLDoc: function( elem ) {
-		return elem.documentElement && !elem.body ||
-			elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
+		return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
+			!!elem.ownerDocument && jQuery.isXMLDoc( elem.ownerDocument );
 	},
 
 	// Evalulates a script in a global context
@@ -712,7 +708,7 @@ jQuery.extend({
 
 		// internal only, use hasClass("class")
 		has: function( elem, className ) {
-			return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
+			return elem && jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 		}
 	},
 
@@ -986,9 +982,11 @@ jQuery.extend({
 					var attributeNode = elem.getAttributeNode( "tabIndex" );
 					return attributeNode && attributeNode.specified
 						? attributeNode.value
-						: elem.nodeName.match(/^(a|area|button|input|object|select|textarea)$/i)
+						: elem.nodeName.match(/(button|input|object|select|textarea)/i)
 							? 0
-							: undefined;
+							: elem.nodeName.match(/^(a|area)$/i) && elem.href
+								? 0
+								: undefined;
 				}
 
 				return elem[ name ];