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查看对象属性方法 #12

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upgrace opened this issue Apr 28, 2020 · 0 comments

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upgrace commented Apr 28, 2020

 in: 返回无论是实例自身及原型上的属性, 不包括symbol属性
  hasOwnproperty： 返回实例自身的属性，不包括symbol属性
  Object.keys: 返回实例自身可访问的属性，不包括symbol属性
  Object.getOwnProtertyName: 返回实例的所有属性，无论是否可访问
  JSON.stringify: 串化对象自身的可枚举的属性
  Object.assign: 复制对象自身的可枚举的属性
  Object.getOwnPropertySymbols: 对象自身的所有可枚举的symbol属性
  Reflect.ownKeys: 对象自身的所有属性，不管是否是symbol 也不管是否可枚举

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