如何检测是否有单元格卡在“加载...”在浏览器中，而相同的单元格已经通过.getValue()

// 获取目标单元格元素
var cellElement = document.getElementById("cellId");

// 监听元素的加载事件
cellElement.onload = function() {
  // 单元格加载完成后的处理逻辑
  var value = cellElement.getValue();
  console.log("单元格值：" + value);
};

// 检测元素的属性变化
var observer = new MutationObserver(function(mutations) {
  mutations.forEach(function(mutation) {
    if (mutation.attributeName === "innerText" || mutation.attributeName === "innerHTML") {
      var value = cellElement.getValue();
      console.log("单元格值：" + value);
    }
  });
});

observer.observe(cellElement, { attributes: true });

// 检测元素的样式变化
var observer = new MutationObserver(function(mutations) {
  mutations.forEach(function(mutation) {
    if (mutation.attributeName === "display" || mutation.attributeName === "visibility") {
      var value = cellElement.getValue();
      console.log("单元格值：" + value);
    }
  });
});

observer.observe(cellElement, { attributes: true });