JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://rniemeyer.github.com/KnockMeOut/Scripts/jquery.tmpl.js"></script>
<script src="http://rniemeyer.github.com/KnockMeOut/Scripts/knockout-1.3pre.js"></script>
<script src="https://raw.github.com/SteveSanderson/knockout.mapping/master/build/output/knockout.mapping-latest.js"></script>
<div> 
    <h1 data-bind="text: Title"></h1>
    <p data-bind="text: GeneratePolicyNumber"></p>
    <input type="radio" name="GeneratePolicyNumber" value="true" data-bind="checked: GeneratePolicyNumber().toString()" />Yes
    <input type="radio" name="GeneratePolicyNumber" value="false" data-bind="checked: GeneratePolicyNumber().toString()" />No
</div>

JavaScript

var jsonFromServer= {
    "Title": "Test with bool value.",
    "GeneratePolicyNumber": "false" // must be a string
};


var viewModel = ko.mapping.fromJS(jsonFromServer);


ko.applyBindings(viewModel);