old-web/app/views/querySubmit.ejs

<!--suppress HtmlUnknownAnchorTarget -->
<div class="row center-align">
  <h4>Da Vam javimo kada se Vaša željena nekretnina pojavi u oglasima, upišite svoj e-mail</h4>
</div>

<form method="POST" id="form-submitquery">
  <div class="row center-align">
    <div class="col s6 push-s3">
      <input id="email" name="email" type="email" placeholder="vas.email@mail.com" required size="250" />
    </div>
  </div>
  <% if (error) {%>
    <div class="row">
      <div class="col s6 push-s3">
        <h6 style="color: red">Greška ! Unesite ispravan email</h6>
      </div>
    </div>
  <%}%>
  <div class="row">
    <div class="col s6 push-s3">
      <a id="submit" href="#" class="welcome-center-button waves-effect waves-light btn">
        Javi mi
      </a>
    </div>
  </div>
  <div class="row">
    <div class="col s6 push-s3">
      <p>* U svakom trenutku možete prekinuti slanje objava kroz link u e-mailu</p>
    </div>
  </div>
</form>

<script>
 $(document).ready( () => {
   $("#submit").click( () => {
     const emailField = document.getElementById('email');
     if (emailField.validity.valid){
       $("#form-submitquery").submit();
     }
   });
 });
</script>