Top Highlights

• Please note that F.prototype here means a regular property named "prototype" on F.
• Setting Rabbit.prototype = animal literally states the following: "When a new Rabbit is created, assign its [[Prototype]] to animal".
• If, after the creation, F.prototype property changes (F.prototype = <another object>), then new objects created by new F will have another object as [[Prototype]], but already existing objects keep the old one.
• We can use constructor property to create a new object using the same constructor as the existing one.
• That’s handy when we have an object, don’t know which constructor was used for it (e.g. it comes from a 3rd party library), and we need to create another one of the same kind.

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