Amazon Partner Links

by sinky

HTML

<a href="http://www.amazon.de/gp/product/B005MN79S6/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1638&creative=6742&creativeASIN=B005MN79S6&linkCode=as2&tag=myazudederblo-21
">test link</a>

<a href="http://www.amazon.de/gp/product/B005MN79S6/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1638&creative=6742&creativeASIN=B005MN79S6&linkCode=as2&tag=myazudederblo-21
">test link</a>

<a href="http://www.amazon.de/whish/">test link</a>

<a href="http://www.amazon.de/Blairs-Death-Rain-Habanero-Chips/dp/B005MN79S6/ref=sr_1_1?ie=UTF8&qid=1393583814&sr=8-1&keywords=death+rain
">test link</a>

JavaScript

(function () {
  var partnerID = "myazudederblo-21";

  function amazonPartnerLink(id, url) {
    url = url.replace("/gp/", "/dp/");
    return url.substr(0, url.lastIndexOf("/")+1) + "?ie=UTF8&linkCode=as2&tag=" + id;
  }

  String.prototype.amazonPartnerLink = function (id) {
    return amazonPartnerLink(id, this);
  };
  
  var links = document.getElementsByTagName('a');
  for (var i = 0, max = links.length; i < max; i++) {
    var _href = links[i].href;

    if (_href.indexOf('amazon.') !== -1) {
      links[i].href = _href.amazonPartnerLink(partnerID);
      console.log(links[i].href);
    }
  }
  return false;
})();