lorem.js

  (function() {
    var searchQuery = window.location.search;
    var ref;
    var $form;
    var userEmail;
    if (searchQuery !== '' && searchQuery.indexOf('ref=') > -1) {
      ref = searchQuery.split('=')[1];
      console.log('ref',ref);
      $form = $('form.newsletter-form');
      
      if ( $form.length > 0 ) {
        console.log('about to submit form');
        $form.submit(function(event) {
          userEmail = $form.serializeArray().find(function(o) {
            return o.name === 'email';
          }).value;
          console.log('form was submitted', userEmail, ref);

          $.ajax({
            crossDomain: true,
            url: 'https://lorem-ipsum-now.now.sh/api/user/' + ref,
            type: 'PUT',
            data: {email: userEmail},
            success: function(data) {
              console.log('YES', data);
            },
            error: function(XMLHttpRequest, textStatus, errorThrown) {
              console.log("error", errorThrown);
            }
          })
        });
      }
      console.log('there is a search query', ref, $form);
    }
  })();