jQuery: How to append something after one element?
<p>DOM</p>

<pre><code>&lt;div id="a"&gt;
   &lt;div id="b"&gt;&lt;/div&gt;
&lt;div&gt;

&lt;p&gt;Insert me after #b&lt;/p&gt;
</code></pre>

<p>Requirement is insert p tag after '#b', and when the insert operation happened again, only replace the p tag instead of adding more. </p>

<p>Thanks for your help</p>
