当不再选中过滤器复选框时，如何再次显示所有div？

// HTML代码
<input type="checkbox" id="filterCheckbox" />

<div class="div1">内容1</div>
<div class="div2">内容2</div>
<div class="div3">内容3</div>

// JavaScript代码
const filterCheckbox = document.getElementById("filterCheckbox");
const divElements = document.querySelectorAll("div");

filterCheckbox.addEventListener("change", function() {
  if (!filterCheckbox.checked) {
    divElements.forEach(function(div) {
      div.style.display = "block";
    });
  }
});

<style>
  .show {
    display: block !important;
  }
</style>

<input type="checkbox" id="filterCheckbox" />

<div class="div1 show">内容1</div>
<div class="div2 show">内容2</div>
<div class="div3 show">内容3</div>

<script>
  const filterCheckbox = document.getElementById("filterCheckbox");
  const divElements = document.querySelectorAll("div");

  filterCheckbox.addEventListener("change", function() {
    if (!filterCheckbox.checked) {
      divElements.forEach(function(div) {
        div.classList.add("show");
      });
    }
  });
</script>