title: html5 datalist to select only predefined options
body: <p>I am using HTML5 <code>datalist</code> to allow selection from a large list by autocomplete and filter feature. But I want to allow selection only from predefined options. See fiddle demo <a href="http://jsfiddle.net/tharas/rrkdu8pk/" rel="noreferrer">http://jsfiddle.net/tharas/rrkdu8pk/</a>.
  I want users to select only from values specified in <code>&lt;option&gt;</code> tag. Is it possible?</p>