var expando = "jQuery" + now(), uuid = 0, windowData = {};
-var emptyObject = {};
jQuery.extend({
cache: {},
var id = elem[ expando ], cache = jQuery.cache, thisCache;
- // Handle the case where there's no name immediately
- if ( !name && !id ) {
- return null;
+ if ( !id && typeof name === "string" && data === undefined ) {
+ return;
}
// Compute a unique ID for the element
if ( typeof name === "object" ) {
elem[ expando ] = id;
thisCache = cache[ id ] = jQuery.extend(true, {}, name);
- } else if ( cache[ id ] ) {
- thisCache = cache[ id ];
- } else if ( typeof data === "undefined" ) {
- thisCache = emptyObject;
- } else {
- thisCache = cache[ id ] = {};
+
+ } else if ( !cache[ id ] ) {
+ elem[ expando ] = id;
+ cache[ id ] = {};
}
+ thisCache = cache[ id ];
+
// Prevent overriding the named cache with undefined values
if ( data !== undefined ) {
- elem[ expando ] = id;
thisCache[ name ] = data;
}
// 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 ) {
+ delete elem[ jQuery.expando ];
+
+ } else if ( elem.removeAttribute ) {
+ elem.removeAttribute( jQuery.expando );
}
// Completely remove the data cache