jQWidgets jqxInput Knockout

HTML

<script src="http://jqwidgets.com/jquery-widgets-demo/jqwidgets/jqx-all.js"></script>
<link rel="stylesheet" href="http://jqwidgets.com/jquery-widgets-demo/jqwidgets/styles/jqx.base.css">
<link rel="stylesheet" href="https://www.jqwidgets.com/jquery-widgets-demo/jqwidgets/styles/jqx.classic.css">
<script src="https://knockoutjs.com/downloads/knockout-3.5.0.js"></script>
<script src="https://www.jqwidgets.com/jquery-widgets-demo/jqwidgets/jqxknockout.js"></script>
<h2>
knockout example
</h2>
<div style="width:450px;background:blue;">
<input data-bind="jqxNumberInput: {value: value, width: '100%', height: '25px'}" />
</div>
<h2>
normal example
</h2>
<div style="width:450px;background:blue;">
<input id="inp2"  />
</div>

JavaScript

var viewModel = function () {
    this.value = ko.observable(42);
    
};
ko.applyBindings(new viewModel());
$("#inp2").jqxNumberInput({
value: 43,
width: '100%',
height: '25px'
});