动态更改折叠工具栏标题

<div class="collapsible">
  <h2 id="title">默认标题</h2>
  <div id="content">
    <!-- 折叠工具栏内容 -->
  </div>
</div>

.collapsible {
  border: 1px solid #ccc;
  margin-bottom: 10px;
}

.collapsible h2 {
  background-color: #f0f0f0;
  padding: 10px;
  margin: 0;
  cursor: pointer;
}

.collapsible #content {
  display: none;
  padding: 10px;
}

// 获取标题和内容元素
var titleElement = document.getElementById("title");
var contentElement = document.getElementById("content");

// 添加点击事件监听器
titleElement.addEventListener("click", function() {
  // 切换内容的显示状态
  if (contentElement.style.display === "none") {
    contentElement.style.display = "block";
  } else {
    contentElement.style.display = "none";
  }
});

// 动态更改标题
function changeTitle(newTitle) {
  titleElement.textContent = newTitle;
}

changeTitle("新标题");