JSFiddle - React, Tailwind, and code Playground

HTML

<code class="hidden_elem" id="ukftg4w44">
<!-- <div class="mtm mlm">
  ...
   ....
  <span class="itemLabel fsm">Unfriend...</span></a></li>
  <li class="uiMenuItem" data-label="Report/Block...">
  <a class="itemAnchor" role="menuitem" tabindex="-1" href="/ajax/report/social.php?content_type=0&amp;cid=1352686914&amp;rid=1352686914&amp;ref=http%3A%2F%2Fwww.facebook.com%2      F%3Fq&amp;h=AfjSxEzzdTSrz-pS&amp;from_gear=timeline" rel="dialog">
  <span class="itemLabel fsm">Report/Block...</span></a></li></ul></div>

  ...
   ....
  </div> -->
  </code>

JavaScript

// http://stackoverflow.com/a/5158301/74757
function getParameterByName(name, path) {
    var match = RegExp('[?&]' + name + '=([^&]*)').exec(path);
    return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
}

var href = $($('.hidden_elem')[0].innerHTML.replace('<!--', '').replace('-->', '')).find('.itemAnchor').attr('href');
var fbId = getParameterByName('h', href);