Как преобразовать строку (кнопку) в число в JavaScript

const secrectNumber = 4;

$(".btn-number").click(function (e) {
  // By using === operator
  if (Number(e.target.innerText) === secrectNumber) {
    console.info(e.target.innerText);
  }
  
  // By using == operator
  if (e.target.innerText == secrectNumber) {
    console.info(e.target.innerText);
  }
});

<script src = "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button class = "btn-number">01</button>

<button class = "btn-number">02</button>

<button class = "btn-number">03</button>

<button class = "btn-number">04</button>

<button class = "btn-number">05</button>