Bootstrap Typeahead Custom Knockout Binding

ko.bootstrap.typeahead.js

ko.bindingHandlers.typeahead = {
    init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
        $(element).typeahead();
    },
    update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
        var value = ko.utils.unwrapObservable(valueAccessor());
        $(element).data('typeahead').source = value;
    }
};