I have a solution to your validation problem
The Javascript code is the following :
function validateForm() {
var name = document.getElementById('name').value;
var select = document.getElementById('mySelect');
var email = document.getElementById('email').value;
if (name == "") {
alert("name must be filled out");
}
if (select.options[select.selectedIndex].value == "Grade") {
alert("age must be filled out");
}
if (email == "") {
alert("Email Must be filled Out");
}
else {
email.addEventListener('blur', function (event) {
event.target.style.backgroundColor = event.target.validity.valid
? 'transparent'
: '#FA8072'
});
}
};