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プロパティの列挙

JavaScript

Posted at 2019-09-13

列挙

手段	自文可	自文不	自シ可	自シ不	親文可	親文不	親シ可	親シ不
for..in	●	×	×	×	●	×	×	×
Object.keys	●	×	×	×	×	×	×	×
Object.getOwnPropertyNames	●	●	×	×	×	×	×	×
Object.getOwnPropertyDescriptors	●	●	●	●	×	×	×	×
Reflect.ownKeys()	●	●	●	●	×	×	×	×

チェック

手段	自文可	自文不	自シ可	自シ不	親文可	親文不	親シ可	親シ不
in	●	●	●	●	●	●	●	●
obj.hasOwnProperty	●	●	●	●	×	×	×	×
obj.propertyIsEnumerable	●	×	●	×	×	×	×	×

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