How to get class name in span in Xpath?

Question

XPath

There is an html like this:

<tr>
 <td class="aad-body aad-icon">
  <span class="aad-green-circle"></span>
 </td>
</tr>
<tr>
 <td class="aad-body aad-icon">
  <span class="aad-green-circle"></span>
 </td>
</tr>
<tr>
 <td class="aad-body aad-icon">
  <span class="aad-green-circle"></span>
 </td>
</tr>

How, using Xpath, to get the class names in the span tag, i.e. text aad-green-circle ?

Answer 1

string(//span[1]/@class)