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並前往https://dev.to/ethanarrowood/which-is-faster-objhasownpropertyprop-vs-objectkeysobjincludesprop-5704

obj.hasOwnProperty(prop) vs Object.keys(obj).includes(prop)

Given an object with n properties (also called keys) is it faster to check if that property exists using obj.hasOwnProperty(prop) or ...

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