如何使我的内联绘图的标题可复制？

<div id="titleContainer">My Inline Chart Title</div>

#titleContainer {
  cursor: pointer;
  /* 添加其他样式以适应需求 */
}

document.getElementById('titleContainer').addEventListener('click', function() {
  var titleText = this.innerText || this.textContent;
  
  var tempTextarea = document.createElement('textarea');
  tempTextarea.value = titleText;
  document.body.appendChild(tempTextarea);
  
  tempTextarea.select();
  document.execCommand('copy');
  
  document.body.removeChild(tempTextarea);
});