Knockout-Kendo number custom binding

knockoutKendoNumber.js

ko.bindingHandlers.number = {
    update: function(element, valueAccessor, allBindingsAccessor) {
       var value = ko.utils.unwrapObservable(valueAccessor()),
           precision = ko.utils.unwrapObservable(allBindingsAccessor().precision) || ko.bindingHandlers.number.defaultPrecision,
           format = '###,###,###,###.' + '0'.repeat(precision) + ';(###,###,###,###.' + '0'.repeat(precision) + ')',
           formattedValue = kendo.toString(parseFloat(value, 10), format);

        ko.bindingHandlers.text.update(element, function() { return formattedValue; });
    },
    defaultPrecision: 0
};