更新引用了Javascript中另一个对象的数据的对象的最好方法？

function deepCopy(obj) {
  return JSON.parse(JSON.stringify(obj));
}

// 示例用法
var originalObj = { name: "John", age: 30, hobbies: ["reading", "coding"] };
var copiedObj = deepCopy(originalObj);

copiedObj.name = "Jane";
copiedObj.hobbies.push("painting");

console.log(originalObj);  // { name: "John", age: 30, hobbies: ["reading", "coding"] }
console.log(copiedObj);    // { name: "Jane", age: 30, hobbies: ["reading", "coding", "painting"] }