Created
March 3, 2024 11:16
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const obj = { | |
[Symbol("my_key")]: 1, | |
[Symbol("second_key")]: 2, | |
enum: 3, | |
nonEnum: 4, | |
}; | |
Object.defineProperty(obj, "nonEnum", { | |
enumerable: false, | |
}); | |
// Ignores symbol-valued property keys: | |
console.log(Object.getOwnPropertyNames(obj)); | |
// ['enum', 'nonEnum'] | |
// Ignores string-valued property keys: | |
console.log(Object.getOwnPropertySymbols(obj)); | |
// [ Symbol("my_key"), Symbol("second_key") ] | |
// Considers all kinds of keys: | |
console.log(Reflect.ownKeys(obj)); | |
// [ "enum", "nonEnum", Symbol("my_key"), Symbol("second_key") ] | |
// Only considers enumerable property keys that are strings: | |
console.log(Object.keys(obj)); | |
// ['enum'] |
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