如何将DOM数据转换为json

function domToJson(node) {
  // 创建JSON对象
  var json = {};

  // 处理节点的标签名
  json.tagName = node.tagName.toLowerCase();

  // 处理节点的属性
  var attributes = node.attributes;
  if (attributes.length > 0) {
    json.attributes = {};
    for (var i = 0; i < attributes.length; i++) {
      var attr = attributes[i];
      json.attributes[attr.name] = attr.value;
    }
  }

  // 处理节点的文本内容
  var textContent = node.textContent.trim();
  if (textContent !== "") {
    json.textContent = textContent;
  }

  // 处理子节点
  var children = node.children;
  if (children.length > 0) {
    json.children = [];
    for (var i = 0; i < children.length; i++) {
      var child = children[i];
      json.children.push(domToJson(child));
    }
  }

  return json;
}

// 示例用法
var dom = document.getElementById("example");
var json = domToJson(dom);
console.log(json);