javascript - Knockout click on checkbox can't define new check box state in IE -

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i have next checkbox on page , 

<input type="checkbox" id="cbselectall" data-bind="click:modeladdrview.selectallonpage">

and have function in model define new checkbox state , make operation method how define state not working in ie ( $(event.toelement).is(':checked') return false ). 

self.selectallonpage = function (data, event) {     var list = self.pagedataview();     var operationset = $(event.toelement).is(':checked');     self.selectarray(list, operationset);     $("#addrlist input:checkbox").attr("checked", $(event.toelement).is(':checked'));     //self.selected(list);     return true; }

how define new check box state in correct way knockout?

i have findout issue need use $(event.target)


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