http://knockoutjs.com/documentation/amd-loading.html
At the bottom of the page:
After you have defined the module update the input element from the HTML example above to be:
<p>First name: <input data-bind="value: firstName, hasFocus: editingName" /><span data-bind="editingName"> You're editing the name!</span></p>
Correction:
The data-bind on the span is not working, I believe this should read data-bind="visible: editingName"
Best regards,