js将json属性值大写

function toUpperCaseValues(obj) {
  if (typeof obj !== 'object' || obj === null) {
    return obj;
  }

  if (Array.isArray(obj)) {
    return obj.map(toUpperCaseValues);
  }

  const newObj = {};
  for (const key in obj) {
    if (obj.hasOwnProperty(key)) {
      newObj[key] = typeof obj[key] === 'string' ? obj[key].toUpperCase() : toUpperCaseValues(obj[key]);
    }
  }
  return newObj;
}

// 示例JSON对象
const jsonObj = {
  name: "John",
  address: {
    street: "123 Main St",
    city: "Anytown"
  },
  hobbies: ["reading", "traveling"]
};

// 转换为大写
const upperCaseJsonObj = toUpperCaseValues(jsonObj);
console.log(upperCaseJsonObj);