ko.applyBindings({ fullName: { firstName: ko.observable("firstName"), lastName: ko.observable("lastName") } });
<div> <div data-bind="text: fullName.firstName"></div> <div data-bind="text: fullName.lastName"></div> </div> <br /> <div data-bind="with: fullName"> <div data-bind="text: firstName"></div> <div data-bind="text: lastName"></div> </div>