Before you say this is a duplicate, hear me out. I followed this answer (jQuery Ajax POST example with PHP), but I am trying to send the data to a Google Sheet. I have already got the code working on the Google Sheet, as I can add data to it by running my code directly from the sheet.
However, getting it to work with my webpage is apparently the problem. Even though I have followed the answer to the question I posted above, I think there is something more at play here that has to do with my lack of experience working in this area.
The code below is to a floating footer and is contained within the code of the whole webpage (where jquery-1.11.0.min.js and jquery-migrate-1.2.1.min.js have already been called). When I click on the submit button, the page looks like it processes the request, but nothing ever appears on the Google Sheet, Sheet1 (https://docs.google.com/spreadsheets/d/19l2kSHdBKEWtIFX44FxLBdvCoKjy7VqPF4IW6C1xAZc/edit?usp=sharing).
#document
<html>
<body>
<div class="floater-footer" id="the-floater-footer">
<span id="myTestSpan"></span>
  <div class="row">
    <div class="col-md-1 col-sm-2 col-xs-3"><p>Newsletter</p></div>
    <div class="col-md-8 col-sm-7 col-xs-9">
      <form id="floater_footer" class="validate subscribe_form">
          <div id="subscrive_group wow fadeInUp">
          <!-- <input type="email" value="" name="EMAIL" class="form-control subscribe_mail" id="mce-EMAIL" placeholder="email address" required /> -->
          <input type="text" class="form-control subscribe_mail" id="bar" name="bar" value="" placeholder="email address" required />
          <!-- <input type="submit" value="Subscribe" name="subscribe" id="mc-embedded-subscribe" class="subscr_btn subscribe_btn"> -->
          <input type="submit" value="Subscribe" class="subscr_btn subscribe_btn" />
          </div>
      </form>
    </div>
    <div class="col-md-3 col-sm-3 hidden-xs">
      <div class="pull-right">
        <!-- social media icons here -->
       </div>
    </div>
  </div>
</div>
<script type="text/javascipt">
jQuery( document ).ready(function( $ ) {
// variable to hold request
var request;
// bind to the submit event of our form
$("#floater_footer").submit(function(event){
    // abort any pending request
    if (request) {
        request.abort();
    }
    // setup some local variables
    var $form = $(this);
    // let's select and cache all the fields
    var $inputs = $form.find("input, select, button, textarea");
    // serialize the data in the form
    var serializedData = $form.serialize();
    // let's disable the inputs for the duration of the ajax request
    // Note: we disable elements AFTER the form data has been serialized.
    // Disabled form elements will not be serialized.
    $inputs.prop("disabled", true);
    //$('#result').text('Sending data...');
    // fire off the request to /form.php
    request = $.ajax({
        url: "https://script.google.com/macros/s/AKfycbyQIDmSInumcrNmU4zxIa4pV8tIlN3A9zx5L5o1hH4qNdP9nDw/exec",
        type: "post",
        data: serializedData
    });
    // callback handler that will be called on success
    request.done(function (response, textStatus, jqXHR){
        // log a message to the console
        //$('#result').html('<a href="https://docs.google.com/spreadsheets/d/10tt64TiALYhPMqR2fh9JzkuhxW7oC0rXXPb_pmJ7HAY/edit?usp=sharing" target="_blank">Success - see Google Sheet</a>');
        console.log("Hooray, it worked!");
    });
    // callback handler that will be called on failure
    request.fail(function (jqXHR, textStatus, errorThrown){
        // log the error to the console
        console.error(
            "The following error occured: "+
            textStatus, errorThrown
        );
    });
    // callback handler that will be called regardless
    // if the request failed or succeeded
    request.always(function () {
        // reenable the inputs
        $inputs.prop("disabled", false);
    });
    // prevent default posting of form
    event.preventDefault();
});
});
</script>
</body>
</html>
Any suggestions on what could be going wrong? I am quite inexperienced when it comes to web development, as compared to most on this site. So I'm sure it's something simple I am missing!