title: Regex for getting text between the last brackets ()
body: <p>I want to extract the text between the last <code>()</code> using javascript</p>
  
  <p>For example </p>
  
  <pre><code>var someText="don't extract(value_a) but extract(value_b)";
  alert(someText.match(regex));
  </code></pre>
  
  <p>The result should be </p>
  
  <pre><code>value_b
  </code></pre>
  
  <p>Thanks for the help</p>