PristineJS - Form Validation

document.addEventListener("DOMContentLoaded",function(){
  let form = document.getElementById("myForm");
  let pristine = new Pristine(form);
  form.addEventListener('submit', function (e) {
     let valid = pristine.validate();
     if (valid) {
       return true;
     } else {
       e.preventDefault();
     }
  });
})