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Symbol
String
{ [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }
Null
The text was updated successfully, but these errors were encountered:
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基本对象:普通对象(Object构造器上的属性二)
Object.getOwnPropertyDescriptor ( O, P )
Object.getOwnPropertyDescriptors ( O )
Object.getOwnPropertyNames ( O )
Object.getOwnPropertySymbols ( O )
GetOwnPropertyKeys ( O, type )
Symbol
类型且 type 是 symbol 或 nextKey 是String
类型且 type 是 string,Object.getPrototypeOf ( O )
Object.is ( value1, value2 )
Object.isExtensible ( O )
Object.isFrozen ( O )
Object.isSealed ( O )
Object.keys ( O )
Object.preventExtensions ( O )
Object.prototype
{ [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }
Object.seal ( O )
Object.setPrototypeOf ( O, proto )
Null
,抛 TypeError 异常Object.values ( O )
The text was updated successfully, but these errors were encountered: