如何获取给定元素的最后一个非空子元素的位置

function getLastNonEmptyChildPosition(element) {
  var children = element.children;
  var lastNonEmptyChildPosition = null;

  for (var i = children.length - 1; i >= 0; i--) {
    var child = children[i];
    if (child.textContent.trim() !== "") {
      lastNonEmptyChildPosition = i;
      break;
    }
  }

  return lastNonEmptyChildPosition;
}

// 示例用法
var element = document.getElementById("myElement");
var lastNonEmptyChildPosition = getLastNonEmptyChildPosition(element);
console.log("最后一个非空子元素的位置：" + lastNonEmptyChildPosition);