X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fdata.js;h=a4c4e4b6da23ea38cf29531eec9f3c2c232ae85e;hb=1533bf7c7794d8e078e7ce5e36de6d190651540a;hp=20c134a6d85a7186e350c74b12e4f26aa2c87a25;hpb=98c7248518f9a2082ccf50240b5ab44bf98d7b5e;p=jquery.git

diff --git a/src/data.js b/src/data.js
index 20c134a..a4c4e4b 100644
--- a/src/data.js
+++ b/src/data.js
@@ -1,9 +1,13 @@
-var expando = "jQuery" + now(), uuid = 0, windowData = {};
+var windowData = {};
 
 jQuery.extend({
 	cache: {},
-	
-	expando:expando,
+
+	// Please use with caution
+	uuid: 0,
+
+	// Unique for each copy of jQuery on the page	
+	expando: "jQuery" + jQuery.now(),
 
 	// The following elements throw uncatchable exceptions if you
 	// attempt to add expando properties to them.
@@ -22,25 +26,29 @@ jQuery.extend({
 			windowData :
 			elem;
 
-		var id = elem[ expando ], cache = jQuery.cache, thisCache;
+		var id = elem[ jQuery.expando ], cache = jQuery.cache, thisCache,
+			isNode = elem.nodeType;
 
 		if ( !id && typeof name === "string" && data === undefined ) {
-			return null;
+			return;
 		}
 
+		// Get the data from the object directly
+		if ( !isNode ) {
+			cache = elem;
+			id = jQuery.expando;
+
 		// Compute a unique ID for the element
-		if ( !id ) { 
-			id = ++uuid;
+		} else if ( !id ) {
+			elem[ jQuery.expando ] = id = ++jQuery.uuid;
 		}
 
 		// Avoid generating a new cache unless none exists and we
 		// want to manipulate it.
 		if ( typeof name === "object" ) {
-			elem[ expando ] = id;
-			thisCache = cache[ id ] = jQuery.extend(true, {}, name);
+			cache[ id ] = jQuery.extend(true, {}, name);
 
 		} else if ( !cache[ id ] ) {
-			elem[ expando ] = id;
 			cache[ id ] = {};
 		}
 
@@ -63,7 +71,8 @@ jQuery.extend({
 			windowData :
 			elem;
 
-		var id = elem[ expando ], cache = jQuery.cache, thisCache = cache[ id ];
+		var id = elem[ jQuery.expando ], cache = jQuery.cache,
+			isNode = elem.nodeType, thisCache = isNode ? cache[ id ] : id;
 
 		// If we want to remove a specific section of the element's data
 		if ( name ) {
@@ -79,19 +88,17 @@ jQuery.extend({
 
 		// Otherwise, we want to remove all of the element's data
 		} else {
-			// Clean up the element expando
-			try {
-				delete elem[ expando ];
-			} catch( e ) {
-				// IE has trouble directly removing the expando
-				// but it's ok with using removeAttribute
-				if ( elem.removeAttribute ) {
-					elem.removeAttribute( expando );
-				}
+			if ( jQuery.support.deleteExpando || !isNode ) {
+				delete elem[ jQuery.expando ];
+
+			} else if ( elem.removeAttribute ) {
+				elem.removeAttribute( jQuery.expando );
 			}
 
 			// Completely remove the data cache
-			delete cache[ id ];
+			if ( isNode ) {
+				delete cache[ id ];
+			}
 		}
 	}
 });
@@ -132,22 +139,3 @@ jQuery.fn.extend({
 		});
 	}
 });
-
-var removeExpando = function( elem ) {
-	delete elem[ expando ];
-};
-
-try {
-	var div = document.createElement("div");
-	div[ expando ] = true;
-	delete div[ expando ];
-	
-} catch( e ) {
-	// IE has trouble directly removing the expando
-	// but it's ok with using removeAttribute
-	removeExpando = function( elem ) {
-		if ( elem.removeAttribute ) {
-			elem.removeAttribute( expando );
-		}
-	};
-}
\ No newline at end of file