2. When will the validation functions be called in the react js code example

Example: 2. When will the validation functions be called in the react js

onClick={(event) => {
  event.preventDefault();
  if(
    validateName(name, setNameIsInvalid, setNameValidationMsg) &&
    validatePhone(phone, setPhoneIsInvalid, setPhoneValidationMsg) &&
    validateEmail(email, setEmailIsInvalid, setEmailValidationMsg)
  ) {
    props.addContact(name, email, phone);
  }
}}