const waitForSiblingElementToBeRemoved = (form) => {
    // This Element are where any errors would appear
    const input = form.querySelector(`input[type='submit']`);

    // This observer looks for the sibling of the input submit button that appears 
    // and then removes when the request is complete
    new MutationObserver((entries, observer) => {
      log('entries[0].removeNodes: ', entries[0].removedNodes);
      if (!entries[0].removedNodes[0]?.classList.contains('ajax-progress')) return; 
      observer.disconnect(); // should this be moved after sendEvent 
      window.setTimeout(() => {
        if (input.classList.contains('error')) return; 
        log('Email has been submitted');
        sendEvent('pjs_email_submitted');
      }, 0);
    }).observe(input.parentElement, { childList: true, subtree: true }); // should be actually have two separate observers for each input?
  };

window.optimizely.get('visitor')

// example of getting specific pjs segment (from tb440)
window.optimizely.get('visitor').custom['22521880007']

/* ----------------------------------------
Note: any modifications to these styles will be global 
---------------------------------------- */
.tippy-box {}
.tippy-content {}
.tippy-arrow {}

/* ----------------------------------------
You can also apply tooltip css overrides on the INTERIOR of your tooltips. Note: results may sometimes be unpredictable 😡
---------------------------------------- */
.tippy-box .style1 {
  font-family: courier;
  color: #0066FF;
  padding: 15px;
  display: inline-block;
}

<!-- jQuery -->
<script src="//code.jquery.com/jquery-latest.js"></script>
<!-- Popper -->
<script src="https://unpkg.com/@popperjs/core@2"></script>
<!-- Tippy -->
<script src="https://unpkg.com/tippy.js@6"></script>

<script language="javascript">
// This code will execute as soon as the document is loaded 
$(document).ready(function() {
    // Allow or disallow html in tooltips (default = false)
    tippy.setDefaultProps({allowHTML: true}); 
    // Transform elements
    let tooltip_elements = $('a[href^="#tooltip_"]');
    tooltip_elements.each(function(i){
        let link = $(this).attr('href');
        let tip = link.replace('#tooltip_', '');
        $(this).attr('data-tippy-content', tip);
        if (link.startsWith('#tooltip_')) {
          $(this).removeAttr('href').css('cursor', 'pointer');
        }
    });
    // Finally, call `tippy`
    tippy('[data-tippy-content]');
});</script>