form-with-values.jsx

      validate={values => {
        let errors = {};
        // REGEX
        let regex = !/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
        // VALIDATION
        if (!values.email) {
          errors.email = "Email is required";
        } else if (regex.test(values.email)) {
          errors.email = "Invalid email address";
        }

        if (!values.password) {
          errors.password = "A password is required";
        } else if (values.password.length < 6) {
          errors.password = "Password must be 6 characters";
        }
        return errors;
      }}
      onSubmit={values => {
        console.log(values);
      }}