viewmodel() { var self=this; self.ko_vue_data=ko.observableArray(ko_vue_data); self.toggleClick=function (event) {//展开折叠效果 window.event? window.event.cancelBubble = true : event.stopPropagation(); var isFolder=event.isFolder(); if(isFolder){ event.isFolder(false); }else { event.isFolder(true); } } } ko.applyBindings(new viewmodel());