Цитата:
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Object.prototype is one of the rare objects that has no prototype: it does not inheritany properties. Other prototype objects are normal objects that do have a prototype. All of the built-in constructors (and most user-defined constructors) have a prototype that inherits from Object.prototype. For example, Date.prototype inherits properties from Object.prototype, so a Date object created by new Date() inherits properties from both Date.prototype and Object.prototype. This linked series of prototype objects is known as a prototype chain.
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