JSFiddle - React, Tailwind, and code Playground

HTML

<p>
    Selecte a car:
    <select data-bind="value: selectedValue, options: carOptions">
      
    </select>
</p>

<span data-bind="text: selectedValue"></span>
<br/>
<span data-bind="text: selectedText"></span>

JavaScript

var viewModel = {
      selectedValue : ko.observable(),
      selectedText :  ko.observable(),
    carOptions : ['Volvo','Saab', 'Mercedes', 'Audi']
};

ko.applyBindings(viewModel);