I want a complete contact form, with. html included

function contactUs() {
  var name = document.getElementById('name').value;
  var email = document.getElementById('email').value;
  var message = document.getElementById('message').value;
  var form = document.getElementById('form');
  var thanks = document.getElementById('thanks');
  var newEmail = document.getElementById('newEmail');

  form.style.display = 'none';
  thanks.style.display = 'block';

  newEmail.innerHTML = 'Recieved your email, ' + name + '! Thanks for sending us your email! <br> <br>' + email + '<br> <br> <b>Your message was: </b> <br>' + message + '<br> <br> We will be in touch shortly.';
}