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dataValidation.js
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dataValidation.js
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const constraints = {
name: {
presence: { allowEmpty: false }
},
email: {
presence: { allowEmpty: false },
email: true
},
subject: {
presence: { allowEmpty: false }
},
message: {
presence: { allowEmpty: false }
}
};
const form = document.getElementById('contactForm');
form.addEventListener('submit', function (event) {
const formValues = {
name: form.elements.name.value,
email: form.elements.email.value,
subject: form.elements.subject.value,
message: form.elements.message.value
};
const errors = validate(formValues, constraints);
if (errors) {
event.preventDefault();
const errorMessage = Object
.values(errors)
.map(function (fieldValues) {
return fieldValues.join(', ');
})
.join('\n');
alert(errorMessage);
}
// if no errors are returned, clear contact form
else {
document.getElementById('name').value = 'Name...';
document.getElementById('email').value = 'Email...';
document.getElementById('subject').value = 'Subject...';
document.getElementById('message').value = 'Message...';
alert('Message sent. We will respond shortly, thank you!');
}
}, false);