Mini Shell

(function () {
  'use strict'

  // Fetch all the forms we want to apply custom Bootstrap validation styles to
  var forms = document.querySelectorAll('.needs-validation')

  // Loop over them and prevent submission
  Array.prototype.slice.call(forms)
	.forEach(function (form) {
	  form.addEventListener('submit', function (event) {
		if (!form.checkValidity()) {
		  event.preventDefault()
		  event.stopPropagation()
		}

		form.classList.add('was-validated')
	  }, false)
	})
})()