When should i wrap a DOM object with $()?
<p>Using JQuery:</p>

<p>Sometimes, I can do <code>variable.val()</code> and it works. Sometimes, I'm required to use <code>$(variable).val()</code>.</p>

<p>I want to be able to make the choice without trial-and-error.</p>

<p>Does anyone know when to wrap an object with <code>$()</code> while using JQuery?</p>
