Does copying the prototype reference from another constructor function maintain the prototype chain?

From	GGolf <invalid@invalid.com>
Newsgroups	comp.lang.javascript
Subject	Does copying the prototype reference from another constructor function maintain the prototype chain?
Date	2013-01-05 12:39 +0530
Organization	Aioe.org NNTP Server
Message-ID	<kc8jjg$k07$1@speranza.aioe.org> (permalink)

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I've been a Javascript dabbler for a few years, and have just embarked 
on learning more advanced stuff.

I have the following question in a tutorial by John Resig:

At http://ejohn.org/apps/learn/#76, Resig mentions that only the 
following maintains the prototype chain:

Ninja.prototype = new Person();

However, I notice that even the following statement makes all the test 
statements pass:

Ninja.prototype = Person.prototype;

Does it mean that using "Person.prototype" can actually be used instead 
of "new Person()"?

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Does copying the prototype reference from another constructor function maintain the prototype chain? GGolf <invalid@invalid.com> - 2013-01-05 12:39 +0530
  Re: Does copying the prototype reference from another constructor function maintain the prototype chain? JJ <jaejunks@nah.meh> - 2013-01-05 10:57 +0000
    Re: Does copying the prototype reference from another constructor function maintain the prototype chain? David Mark <dmark.cinsoft@gmail.com> - 2013-01-05 06:44 -0800
  Re: Does copying the prototype reference from another constructor function maintain the prototype chain? David Mark <dmark.cinsoft@gmail.com> - 2013-01-05 06:43 -0800
  Re: Does copying the prototype reference from another constructor function maintain the prototype chain? John G Harris <john@nospam.demon.co.uk> - 2013-01-05 15:53 +0000
    Re: Does copying the prototype reference from another constructor function maintain the prototype chain? David Mark <dmark.cinsoft@gmail.com> - 2013-01-05 08:51 -0800
  Re: Does copying the prototype reference from another constructor function maintain the prototype chain? Scott Sauyet <scott.sauyet@gmail.com> - 2013-01-05 12:25 -0800
  Re: Does copying the prototype reference from another constructor function maintain the prototype chain? Luc Yen <luc@goal.tw> - 2013-01-05 13:23 -0800

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