can jquery change a jquery-element to a normal dom-element ,
<p>cauz  i have to use a  normal dom-element ，</p>

<p>the dom-element is like this : document.getElementById('a') or document.createElement('div')</p>

<p>so my mean is  change $('#a') to document.getElementById('a')</p>

<p>can jquery do this ??</p>

<p>thanks</p>
