JS Built-ins
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ObjectObject.getOwnPropertySymbolsbeginner

Object.getOwnPropertySymbols() — Symbol created with Symbol()

📖 Usage Example
// Get all Symbol-keyed properties
const sym = Symbol('id')
const obj = { [sym]: 1, name: 'Alice' }
Object.getOwnPropertySymbols(obj)   // → [Symbol(id)]

Use Object.getOwnPropertySymbols() to retrieve all symbol-keyed own properties, which are invisible to Object.keys().

Object.getOwnPropertySymbols() — creating Symbols

Each call to Symbol(description) creates a unique symbol. Two symbols with the same description are not equal.

Challenge: Implement uniqueSymbols() that creates two symbols with the same description 'test' and returns whether they are equal.

uniqueSymbols() // → false (each Symbol() call is unique)
💡 Hints (1)
  • • `Symbol()` always creates a brand-new unique value, even with the same description string.