Object之prototype问题?
因为 ECMA-262 第 15.2.3.1 节规定 Object.prototype 是个不可写的属性[1]。Object.getOwnPropertyDescriptor(Object, "prototype")
{value: Object, writable: false, enumerable: false, configurable: false }
[1] http://www.ecma-international.org/ecma-262/5.1/#sec-15.2.3.1
原发布于 https://www.zhihu.com/question/24338980/answer/27472168