Валидация ФИО javascript

function validateForm() { 
 
    if (document.myForm.Name.value == "" && document.myForm.Name.value == !/^[А-Я][а-я]*/ ) { 
 
        document.myForm.Name.focus(); 
        var elements = document.getElementsByName("Name")[0]; 
        elements.className += " input_error"; 
        return false; 
 
    } else { 
        var elementsOk = document.getElementsByName("Name")[0]; 
        elementsOk.classList.remove("input_error"); 
    } 
}

<form class="contact-form" name="myForm" onsubmit="validateForm();" id="form"> 
        <div class="contact-form__item"> 
          <input class="contact-form__input" type="text" name="Name" placeholder="Имя Фамилия"> 
        </div> 
        <div class="contact-form__item"> 
          <input class="contact-form__input" type="email" name="Email" placeholder="Email"> 
        </div> 
        <div class="contact-form__item"> 
          <input class="btn-main contact-form__submit" type="submit" value="Бесплатная Консультация"> 
        </div> 
      </form>