JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://raw.github.com/SteveSanderson/knockout/master/build/output/knockout-latest.debug.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/jquery-ui.min.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/themes/base/jquery-ui.css">
<div data-bind="with: SubViewModel">
    <input id="fisttextbox" data-bind="value: Filter().From"/>
</div>

<div>
    <input id="secondtextbox" data-bind="value: SubViewModel().Filter().From"/>
</div>

JavaScript

function Filter() {
    var self = this;
    self.From = ko.observable("");
}

function SubViewModel() {
    var self = this;
    self.Filter = ko.observable(new Filter());
}

function ViewModel() {
    var self = this;
    self.SubViewModel = ko.observable(new SubViewModel());
}

var dateTimePickerOptions = {
        changeMonth: true,
        changeYear: true,
        dateFormat: "dd.mm.yy",
        showWeek: true
    };

$("#fisttextbox").datepicker(dateTimePickerOptions);
$("#secondtextbox").datepicker(dateTimePickerOptions);

var vm = new ViewModel();
ko.applyBindings(vm);