Path: csiph.com!newsfeed.xs4all.nl!newsfeed9.news.xs4all.nl!news.dns-netz.com!news.freedyn.net!news.mb-net.net!open-news-network.org!.POSTED.50.236.197.178.dynamic.wless.lssmb00p-cgnat.res.cust.swisscom.ch!not-for-mail
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: Referencing an object prop with a string
Date: Tue, 02 Feb 2021 04:06:57 +0100
Organization: PointedEars Software (PES)
Lines: 14
Message-ID: <806120824.0ifERbkFSE@PointedEars.de>
References: <Vt-dnSg5Kd2Iuov9nZ2dnUU7-Q3NnZ2d@westnet.com.au> <5793bf43-6506-4351-bdca-3d59d740c5e5n@googlegroups.com>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7Bit
Injection-Info: gwaiyur.mb-net.net; posting-host="50.236.197.178.dynamic.wless.lssmb00p-cgnat.res.cust.swisscom.ch:178.197.236.50"; logging-data="21118"; mail-complaints-to="abuse@open-news-network.org"
User-Agent: KNode/4.14.10
Cancel-Lock: sha1:oGZLfIdmCECR7GCF8vAhVUHUp/k=
X-Face: %i>XG-yXR'\"2P/C_aO%~;2o~?g0pPKmbOw^=NT`tprDEf++D.m7"}HW6.#=U:?2GGctkL,f89@H46O$ASoW&?s}.k+&.<b';Md8`dH6iqhT)6C^.Px|[=M@7=Ik[_w<%n1Up"LPQNu2m8|L!/3iby{-]A+#YE}Kl{Cw$\U!kD%K}\2jz"QQP6Uqr],./"?;=4v
Face: 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
X-User-ID: U2FsdGVkX19TGmqQuobxJppAC64jcNSGD8KI1DQaCjURYvb8Sl46zg==
Xref: csiph.com comp.lang.javascript:39420

Michael Haufe (TNO) wrote:

> let walk = (o, path)=>path.split('.').reduce((o,k)=>o && o[k], o);

This does not work if the property name contains `.'.  The approach to use 
Array.prototype.reduce() is an elegant one, though, and can be applied to 
supporting a path array (too), which solves that problem:

  let walk = (o, path) => path.reduce((o, k) => o && o[k], o);
 
-- 
PointedEars
FAQ: <http://PointedEars.de/faq> | <http://PointedEars.de/es-matrix>
<https://github.com/PointedEars> | <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | Please do not cc me./Bitte keine Kopien per E-Mail.