Is it possible to insert in-line javascript code into another javascript/jquery code?

This question looks a little dumb... but I am wondering if is it possible to insert in-line javascript code into another javascript code. Lets put this clear:

I'm trying to put a google plus button, appending it through jquery as follows:

jQuery('.gplus').append('<g:plusone annotation="inline"></g:plusone>');

This button needs external js in order to work properly. What i'm trying to do is insert the external js doing this:

var gplusjs = '

<script type="text/javascript">

  (function() {var po = document.createElement("script");

    po.type = "text/javascript"; po.async = true;

    po.src = "https://apis.google.com/js/plusone.js";

    var s = document.getElementsByTagName("script")[0];

    s.parentNode.insertBefore(po, s);

  })();

</script>';

jQuery('#js').append(gplusjs);

The result of this is the code printed as HTML, but not interpreted as a script. This is possible? I am a dumbass? Thanks!