title: How to get < span > value？
body: <p>There are a piece of code,but can not use <code>&lt;id&gt;</code> tag.</p>
  
  <p>So,how do I get to the <code>&lt;span&gt; 1 2 3 4</code>?</p>
  
  <pre><code>&lt;div id="test"&gt;
      &lt;span&gt;1&lt;/span&gt;
      &lt;span&gt;2&lt;/span&gt;
      &lt;span&gt;3&lt;/span&gt;
      &lt;span&gt;4&lt;/span&gt;
  &lt;div&gt;
  </code></pre>