如何在JS中点击cookie关闭的div？

<div id="cookieDiv">
  <button id="closeButton">关闭</button>
</div>

var closeButton = document.getElementById("closeButton");
var cookieDiv = document.getElementById("cookieDiv");

closeButton.addEventListener("click", function() {
  // 在这里执行关闭div的操作
});

closeButton.addEventListener("click", function() {
  cookieDiv.style.display = "none";
});

// 设置cookie的值
closeButton.addEventListener("click", function() {
  cookieDiv.style.display = "none";
  document.cookie = "divClosed=true";
});

// 检查cookie的值
window.addEventListener("load", function() {
  var divClosed = document.cookie.indexOf("divClosed=true") > -1;
  if (divClosed) {
    cookieDiv.style.display = "none";
  }
});