Ideeën prioriteren

<div id="form-container">
  <iframe id="ms-form" src="https://forms.office.com/Pages/ResponsePage.aspx?id=k9by_qKxvEiMjoKaiNmS-M6-hyonyCZElg-LbIAtZLRUQlc3TUZHUjFFQ0dORkRaTFRUS0cyVDdTMC4u" width="100%" height="600px" frameborder="0"></iframe>
</div>
<div id="already-submitted" style="display:none; padding:20px;">
  ✅ Je hebt dit formulier al ingevuld. Bedankt!
</div>

<script>
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    document.getElementById('form-container').style.display = 'none';
    document.getElementById('already-submitted').style.display = 'block';
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  // MS Forms stuurt een message na submit
  window.addEventListener('message', function(e) {
    if (e.data && e.data.type === 'form-submit') {
      localStorage.setItem('formSubmitted', 'true');
    }
  });
</script>