如何在点击按钮时向变量重复加+1？

<button id="incrementButton">点击增加</button>

let count = 0;

const incrementButton = document.getElementById("incrementButton");
incrementButton.addEventListener("click", incrementCount);

function incrementCount() {
  count += 1;
  // 更新页面上显示的值
  document.getElementById("countDisplay").innerHTML = count;
}

<p>当前值：<span id="countDisplay">0</span></p>