javascript - Clear all items from view in single page app -

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i have single page app (written in backbone) backed database default (for time being) list number of items, however, wish provide option sort date or other criterion. therefore, need able clear items screen , query db items meet criterion.

question: general strategy clearing views on screen before reloading new items db?

note, in backbone todomvc app, strategy use css visible/hidden toggle between different states, unworkable if application backed db lot of items , 30 shown initially.

if want delete events need undelegate events, if didn't , created new backbone view old view still listen actions , if have click callback triggered new , old one

destroy:=>   @.undelegateevents()    @$(el).empty()

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