$(this) in plugin options
<p>I'm new to writing jQuery plugins, and I'm confused as to how to let users use $(this) in their options. As a simple (and redundant) example, say I wanted to let a user append their selection's text to an element they supply in their options, like so:</p>

<pre><code>$(function() {
   $('#stuff').appender({ 'placement' : this });
});
</code></pre>

<p>And the plugin code is:</p>

<pre><code>(function($) {
    $.fn.appender = function(options) {

        var opts = $.extend({}, $.fn.appender.defaults, options);

        return this.each( function() {
            var $el = $(this);
            $(opts.placement).append( $el.text() );
        });

    };

    $.fn.appender.defaults = {
        'placement' :   'body',
    }
})(jQuery);
</code></pre>

<p>If the user supplies 'body' or $('#wrapper') for 'placement' in the plugin options, of course it works as expected. But when using 'this' or '$(this)', it refers to the document itself rather than the element in the selection.</p>

<p>This is a pretty crappy example of a plugin, but the thing I would like to learn is how to allow plugin users to use $(this) or its attributes as values for options.</p>

<p>Any ideas?</p>
