title: how I can find node from string
body: <p>how I can remove field tag with attribute fieldname=&quot;Age&quot; in textarea or string value?
  my textarea value is:</p>
  <pre><code>&lt;root&gt;
     &lt;field displayname=&quot;سن&quot; fieldname=&quot;Age&quot; length=&quot;0&quot; required=&quot;false&quot; type=&quot;1&quot;&gt;&lt;/field&gt;
     &lt;field displayname=&quot;جنسیت&quot; fieldname=&quot;Gender&quot; length=&quot;1&quot; required=&quot;true&quot; type=&quot;1&quot;&gt;&lt;/field&gt;
     &lt;field displayname=&quot;شرح&quot; fieldname=&quot;Descriptiom&quot; length=&quot;100&quot; required=&quot;false&quot; type=&quot;5&quot;&gt;&lt;/field&gt;
  &lt;/root&gt;
  </code></pre>
  <pre><code>var xmlString = $('#AdditionalFields').val();
  var x = $(xmlString).find('[fieldname=Age]')[0];
  </code></pre>
  <p>I want remove x from xmlString.</p>