Gets the own property descriptor of the specified object. An own property descriptor is one that is defined directly on the object and is not inherited from the object's prototype.
Object that contains the property.
The property name.
获取一个对象自身属性的描述符。
Gets the descriptor of an own property of an object.
Gets the own property descriptor of the specified object. An own property descriptor is one that is defined directly on the object and is not inherited from the object's prototype.