https://www.cochranresearchpark.com/webform/javascript/interest_contact_form/custom.js?tmj0bv

1(function() {
2  'use strict';
3  window.addEventListener('load', function() {
4    // Fetch all the forms we want to apply custom Bootstrap validation styles to
5    var forms = document.getElementsByClassName('needs-validation');
6    // Loop over them and prevent submission
7    var validation = Array.prototype.filter.call(forms, function(form) {
8      form.addEventListener('submit', function(event) {
9        if (form.checkValidity() === false) {
10          event.preventDefault();
11          event.stopPropagation();
12        }
13        form.classList.add('was-validated');
14      }, false);
15    });
16  }, false);
17})();