title: Detecting support for specific HTML 5 features via jQuery
body: <p>I'm working on some HTML5 demo code, including stuff like <code>&lt;input type="date" /&gt;</code></p>
  
  <p>This currently works correctly in Opera 10 as-is, but every other browser just displays a normal text input. I'm then using a jQuery.date-input plugin to override this behaviour on browsers that don't support it.</p>
  
  <p>Problem is - the jQuery's running on Opera as well, so in Opera I'm getting two calendar date-pickers (one from the browser, one from jQuery)</p>
  
  <p>I can work around this for now using <code>if (window.opera)</code> - but is there some way using, say, jQuery.support, that I can reliably detect whether the current browser supports a particular HTML5 feature or not?</p>