nl_tokens: Reorder DOM after sorting . When your element s rendering do not use their index you can pass reorderOnSort : true to only reorder the DOM after a sort instead of rendering all the collectionView
pl_tokens: function ( ) { var children = this . children ; var <mask> = this . _filteredSortedModels ( ) ; if ( ! models . length && this . _showingEmptyView ) { return this ; } var anyModelsAdded = _ . some ( models , function ( model ) { return ! children . findByModel ( model ) ; } ) ; // If there are any new models added due to filtering // We need to add child views // So render as normal if ( anyModelsAdded ) { this . render ( ) ; } else { // get the DOM nodes in the same order as the models var elsToReorder = _ . map ( models , function ( model , index ) { var view = children . findByModel ( model ) ; view . _index = index ; return view . el ; } ) ; // find the views that were children before but arent in this new ordering var filteredOutViews = children . filter ( function ( view ) { return ! _ . contains ( elsToReorder , view . el ) ; } ) ; this . triggerMethod ( 'before:reorder' ) ; // since append moves elements that are already in the DOM, // appending the elements will effectively reorder them this . _appendReorderedChildren ( elsToReorder ) ; // remove any views that have been filtered out _ . each ( filteredOutViews , this . removeChildView , this ) ; this . checkEmpty ( ) ; this . triggerMethod ( 'reorder' ) ; } }