jquery - How can i reset list viewModel -

i have list of model same knockoutjs live example: http://jsfiddle.net/rniemeyer/7rdc3/

main:

var viewmodel = new giftmodel([ { name: "tall hat", price: "39.95"}, { name: "long cloak", price: "120.00"} ]); ko.applybindings(viewmodel); 

how can reset object viewmodel null or new giftmodel([]) button click event (not use knock out event), want whenever click button, grid empty gift. example :

$( "#button" ).click(function() { clearknockoutviewmodel(); }); 

---> viewmodel empty , html clear.

this right way.

$( "#button" ).click(function() { clearknockoutviewmodel(); });  function clearknockoutviewmodel(){   var element = $('#elementid')[0];    ko.cleannode(element);   ko.applybindings(viewmodel, element); } 

you loose viewmodel logic if empty it.