Attach data directly to plain objects, no reason to use the central jQuery.cache...

diff --git a/src/data.js b/src/data.js
index a97ac04..109d556 100644 (file)
--- a/src/data.js
+++ b/src/data.js
@@ -3,7 +3,7 @@ var expando = "jQuery" + now(), uuid = 0, windowData = {};
 jQuery.extend({
        cache: {},
        
-       expando:expando,
+       expando: expando,
 
        // The following elements throw uncatchable exceptions if you
        // attempt to add expando properties to them.
@@ -22,25 +22,29 @@ 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;
                }
 
+               // 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 = ++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 +67,8 @@ 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 ) {
@@ -79,7 +84,7 @@ jQuery.extend({
 
                // Otherwise, we want to remove all of the element's data
                } else {
-                       if ( jQuery.support.deleteExpando ) {
+                       if ( jQuery.support.deleteExpando || !isNode ) {
                                delete elem[ jQuery.expando ];
 
                        } else if ( elem.removeAttribute ) {
@@ -87,7 +92,9 @@ jQuery.extend({
                        }
 
                        // Completely remove the data cache
-                       delete cache[ id ];
+                       if ( isNode ) {
+                               delete cache[ id ];
+                       }
                }
        }
 });

diff --git a/test/unit/data.js b/test/unit/data.js
index 0d75bc4..11bce4d 100644 (file)
--- a/test/unit/data.js
+++ b/test/unit/data.js
@@ -18,13 +18,13 @@ test("expando", function(){
        equals( jQuery.expando in obj, true, "jQuery.data added an expando to the object" );
        
        var id = obj[jQuery.expando];
-       equals( id in jQuery.cache, true, "jQuery.data added an entry to jQuery.cache" );
+       equals( id in jQuery.cache, false, "jQuery.data did not add an entry to jQuery.cache" );
        
-       equals( jQuery.cache[id].foo, "bar", "jQuery.data worked correctly" );
+       equals( id.foo, "bar", "jQuery.data worked correctly" );
 });
 
 test("jQuery.data", function() {
-       expect(9);
+       expect(12);
        var div = document.createElement("div");
 
        ok( jQuery.data(div, "test") === undefined, "Check for no data exists" );
@@ -49,6 +49,14 @@ test("jQuery.data", function() {
        jQuery.data(div, { "test": "in", "test2": "in2" });
        equals( jQuery.data(div, "test"), "in", "Verify setting an object in data." );
        equals( jQuery.data(div, "test2"), "in2", "Verify setting an object in data." );
+
+       var obj = {};
+       jQuery.data( obj, "prop", true );
+
+       ok( obj[ jQuery.expando ], "Data is being stored on the object." );
+       ok( obj[ jQuery.expando ].prop, "Data is being stored on the object." );
+
+       equals( jQuery.data( obj, "prop" ), true, "Make sure the right value is retrieved." );
 });
 
 test(".data()", function() {