Метод clone:
clone: function( elem, dataAndEvents, deepDataAndEvents ) {
var destElements, node, clone, i, srcElements,
inPage = jQuery.contains( elem.ownerDocument, elem );
if ( jQuery.support.html5Clone || jQuery.isXMLDoc( elem ) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
clone = elem.cloneNode( true );
// IE<=8 does not properly clone detached, unknown element nodes
} else {
fragmentDiv.innerHTML = elem.outerHTML;
fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
}
if ( ( !jQuery.support.noCloneEvent || !jQuery.support.noCloneChecked ) &&
( elem.nodeType === 1 || elem.nodeType === 11 ) && !jQuery.isXMLDoc( elem ) ) {
// We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
destElements = getAll( clone );
srcElements = getAll( elem );
// Fix all IE cloning issues
for ( i = 0; ( node = srcElements[ i ] ) != null; ++i ) {
// Ensure that the destination node is not null; Fixes #9587
if ( destElements[ i ] ) {
fixCloneNodeIssues( node, destElements[ i ] );
}
}
}
// Copy the events from the original to the clone
if ( dataAndEvents ) {
if ( deepDataAndEvents ) {
srcElements = srcElements || getAll( elem );
destElements = destElements || getAll( clone );
for ( i = 0; ( node = srcElements[ i ] ) != null; i++ ) {
cloneCopyEvent( node, destElements[ i ] );
}
} else {
cloneCopyEvent( elem, clone );
}
}
// Preserve script evaluation history
destElements = getAll( clone, "script" );
if ( destElements.length > 0 ) {
setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
}
destElements = srcElements = node = null;
// Return the cloned set
return clone;
},
Функция cloneCopyEvent:
function cloneCopyEvent( src, dest ) {
if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
return;
}
var type, i, l,
oldData = jQuery._data( src ),
curData = jQuery._data( dest, oldData ),
events = oldData.events;
if ( events ) {
delete curData.handle;
curData.events = {};
for ( type in events ) {
for ( i = 0, l = events[ type ].length; i < l; i++ ) {
jQuery.event.add( dest, type, events[ type ][ i ] );
}
}
}
// make the cloned public data object a copy from the original
if ( curData.data ) {
curData.data = jQuery.extend( {}, curData.data );
}
}
