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Optimize cleanData: allow direct access to data_priv for cleanup

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Rick Waldron 2013-04-17 12:53:41 -04:00 committed by Dave Methvin
parent 5e8a5f4adc
commit c1b8edfcc9
2 changed files with 25 additions and 23 deletions
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4
src/data.js
View File

@ -185,7 +185,9 @@ Data.prototype = {
);
},
discard: function( owner ) {
delete this.cache[ this.key( owner ) ];
if ( owner[ this.expando ] ) {
delete this.cache[ owner[ this.expando ] ];
}
}
};

44
src/manipulation.js
View File

@ -433,35 +433,35 @@ jQuery.extend({
},
cleanData: function( elems ) {
var data, elem, type,
l = elems.length,
i = 0,
special = jQuery.event.special;
var data, elem, events, type, key, j,
special = jQuery.event.special,
i = 0;
for ( ; i < l; i++ ) {
elem = elems[ i ];
for ( ; (elem = elems[ i ]) !== undefined; i++ ) {
if ( Data.accepts( elem ) ) {
key = elem[ data_priv.expando ];
if ( jQuery.acceptData( elem ) ) {
if ( key && (data = data_priv.cache[ key ]) ) {
events = Object.keys( data.events || {} );
if ( events.length ) {
for ( j = 0; (type = events[j]) !== undefined; j++ ) {
if ( special[ type ] ) {
jQuery.event.remove( elem, type );
data = data_priv.access( elem );
if ( data ) {
for ( type in data.events ) {
if ( special[ type ] ) {
jQuery.event.remove( elem, type );
// This is a shortcut to avoid jQuery.event.remove's overhead
} else {
jQuery.removeEvent( elem, type, data.handle );
// This is a shortcut to avoid jQuery.event.remove's overhead
} else {
jQuery.removeEvent( elem, type, data.handle );
}
}
}
if ( data_priv.cache[ key ] ) {
// Discard any remaining `private` data
delete data_priv.cache[ key ];
}
}
}
// Discard any remaining `private` and `user` data
// One day we'll replace the dual arrays with a WeakMap and this won't be an issue.
// (Splices the data objects out of the internal cache arrays)
data_user.discard( elem );
data_priv.discard( elem );
// Discard any remaining `user` data
delete data_user.cache[ elem[ data_user.expando ] ];
}
},