title: Get HREF value by class name
body: <p>I'm trying to get <strong>href value</strong> of a specific anchor tag placed on a html page. </p>
  
  <p>html tag structure</p>
  
  <pre><code>&lt;a rel="nofollow" title="some title" href="http://www.this-is-what-i-need.com/just-this.html"&gt;&lt;span&gt;&lt;em class="buttonGo"&gt;&lt;/em&gt;Go to this page&lt;/span&gt;&lt;/a&gt;
  </code></pre>
  
  <p>How do I get the href value from above anchor tag using <strong>buttonGo</strong> class name?</p>