PhoneSites affiliate script

affScript.js

<script>
  function getParameterByName(name, url) {
    if (!url) url = window.location.href;
    name = name.replace(/[\[\]]/g, "\\$&");
    var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
        results = regex.exec(url);
    if (!results) return null;
    if (!results[2]) return '';
    return decodeURIComponent(results[2].replace(/\+/g, " "));
  };
  function createCookie(name, value, days, domain) {
    var expires;
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = "; expires=" + date.toGMTString();
    }else{
        expires = "";
    };
    document.cookie = encodeURIComponent(name) + "=" + encodeURIComponent(value) + expires + "; path=/"+"; domain="+domain;
  };
  var affiliate = getParameterByName('affiliate');
  if(affiliate){
    console.log('Affiliate ID:', affiliate);
    createCookie('partner_id', affiliate, 30, 'phonesites.com');
  };
</script>