<form id="form1" action="/submit-form" method="post">
  <!-- Form fields go here -->
  <input type="submit" value="Submit">
</form>

<script>
document.getElementById('form1').addEventListener('submit', function(event) {
  event.preventDefault();
  dataLayer.push({
    'event': 'formSubmission',
    'formLocation': 'Location A',
  });
  // Perform any additional form submission handling here
  // For example, you can submit the form data via AJAX.
});
</script>