JS属性描述符之Object.defineProperty()定义对象属性特性

一、Object.defineProperty的作用
用来给对象新增属性,和修改对象中的属性。

二、JS对象中的描述符
js对象中两种属性描述符:数据描述符和存取描述符(访问描述符)。

参考应用链接:
https://www.cnblogs.com/xlys/p/8520676.html
https://www.cnblogs.com/yy95/p/10016221.html

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