title: Get URL beginning with
body: <p>I try to extract the first URL beginning with <code>http://damonpyn.com</code>. The format of the URL is <code>http://damonpyn.com/yyyy-mm-ddfb</code> (only <code>yyyy-mm-dd</code> changes with a date). </p>
  
  <p>Here is my example :</p>
  
  <pre><code>var str = '...text before http://damonpyn.com/yyyy-mm-ddfb text after...';
  var value = str.match(REGEX???);
  output = [{urlpyn: value}];
  </code></pre>
  
  <p>Desired result: <code>http://damonpyn.com/yyyy-mm-ddfb</code>. </p>