选择题第113题：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：
更新时间：2021-07-04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”
