将Json键转换为小写

function convertKeysToLower(jsonObj) {
  if (typeof jsonObj !== 'object') {
    return jsonObj;
  }

  if (Array.isArray(jsonObj)) {
    return jsonObj.map(convertKeysToLower);
  }

  const convertedObj = {};
  for (let key in jsonObj) {
    if (jsonObj.hasOwnProperty(key)) {
      const convertedKey = key.toLowerCase();
      convertedObj[convertedKey] = convertKeysToLower(jsonObj[key]);
    }
  }

  return convertedObj;
}

// 示例用法
const json = {
  "Name": "John",
  "Age": 30,
  "Email": "john@example.com"
};

const convertedJson = convertKeysToLower(json);
console.log(convertedJson);

{
  "name": "John",
  "age": 30,
  "email": "john@example.com"
}