jquery plugin - 1 config setting get value from another config setting
<p>When creating a plugin in jquery, i am creating my configurable settings like this:</p>

<pre><code>var settings = $.extend( {
    'setting_one'  : 'setting_one_value',
    'setting_two'  : 'setting_two_value'
}, options)
</code></pre>

<p>What i would like to do is create another setting which depends on the value of either setting_one or setting_two.</p>

<p>For example:</p>

<pre><code>var settings = $.extend( {
    'setting_one'    : 'setting_one_value',
    'setting_two'    : 'setting_two_value',
    'setting_three'  : setting_one + setting_two,
}, options)
</code></pre>

<p>How can i do this?</p>
