jquery manipulate html
<p>my dynamic generated html look like below</p>

<pre><code>&lt;ul class="missingList"&gt;
&lt;li&gt;Please select at least one answer&lt;/li&gt;
&lt;li&gt;Please select at least one answer&lt;/li&gt;
&lt;li&gt;Please select at least one answer&lt;/li&gt;
&lt;li&gt;Please select at least one answer&lt;/li&gt;
&lt;li&gt;Please select at least one answer&lt;/li&gt;
&lt;li&gt;Please select at least one answer2&lt;/li&gt;
&lt;li&gt;Please select at least one answer2&lt;/li&gt;
&lt;li&gt;Please select at least one answer2&lt;/li&gt;
&lt;/ul&gt;
</code></pre>

<p>i want to use jquery to check for all duplication filter the result so that the output become</p>

<pre><code>&lt;ul class="missingList"&gt;
&lt;li&gt;Please select at least one answer&lt;/li&gt;
&lt;li&gt;Please select at least one answer2&lt;/li&gt;
&lt;/ul&gt;
</code></pre>
