if(typeof(elemName.get(0).checkValidity) === 'function') {
    // Verify if the name field is valid for the HTML5 constraints specified on it.
    if(!elemName.get(0).checkValidity()) {
        errors.push({$elem : elemName});
    }
 
    // Verify if the email field is valid for the HTML5 constraints specified on it.
    if(!elemEmail.get(0).checkValidity()) {
        errors.push({$elem : elemEmail});
    }
 
    // Verify if the phone number field is valid for the HTML5 constraints specified on it.
    if(!elemPhoneNumber.get(0).checkValidity()) {
        errors.push({$elem : elemPhoneNumber});
    }
}