What is the precise difference between Object.getOwnPropertyDescriptor and the in operator for checking property existence?

JavaScript Professional Hard

JavaScript Professional — Hard

What is the precise difference between Object.getOwnPropertyDescriptor and the in operator for checking property existence?

Key points

Object.getOwnPropertyDescriptor focuses on own properties
in operator checks prototype chain properties
Object.getOwnPropertyDescriptor returns descriptor or undefined
in operator returns a boolean
Key difference lies in the scope of properties checked

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