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並前往https://newbedev.com/why-use-object-prototype-hasownproperty-call-myobj-prop-instead-of-myobj-hasownproperty-prop

Why use Object.prototype.hasOwnProperty.call(myObj, prop ...

hasOwnProperty (prop)?. Is there any practical difference [between my examples]?. The user may have a JavaScript object created with Object.create( ...

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