选择题【1476/1530】输出是什么?
1const person = { name: "Lydia" }; 2 3Object.defineProperty(person, "age", { value: 21 }); 4 5console.log(person); 6console.log(Object.keys(person));
难度：
2021-07-02 创建本题为“单选题”
1const person = { name: "Lydia" }; 2 3Object.defineProperty(person, "age", { value: 21 }); 4 5console.log(person); 6console.log(Object.keys(person));
本题为“单选题”
