title: How to get content from tag with certian class in Selenium in JavaScript
body: <p>I'm web scraping a website with Selenium Webdriver in JS and I want to get the count of <code>&lt;tr&gt;</code> tags that have exactly three children.</p>
  
  <pre><code>&lt;tr&gt;
   &lt;td&gt;One&lt;/td&gt;
   &lt;td&gt;Two&lt;/td&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;One&lt;/td&gt;
   &lt;td&gt;Two&lt;/td&gt;
   &lt;td&gt;Three&lt;/td&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;One&lt;/td&gt;
   &lt;td&gt;Two&lt;/td&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;One&lt;/td&gt;
   &lt;td&gt;Two&lt;/td&gt;
   &lt;td&gt;Three&lt;/td&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;One&lt;/td&gt;
   &lt;td&gt;Two&lt;/td&gt;
   &lt;td&gt;Three&lt;/td&gt;
   &lt;td&gt;Four&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>The result is: 2 tags that have exactly three <code>&lt;td&gt;</code> child nodes</p>
  
  <p>I want to write a xPath line but I do not know how, please help.</p>