Path: csiph.com!news.mixmin.net!news.albasani.net!.POSTED!not-for-mail From: Thomas 'PointedEars' Lahn Newsgroups: comp.lang.javascript Subject: Re: check for obj nested prop Date: Sat, 09 May 2020 00:26:07 +0200 Organization: PointedEars Software (PES) Lines: 26 Message-ID: <11518358.O9o76ZdvQC@PointedEars.de> References: <87pnbeycrm.fsf@bsb.me.uk> Reply-To: Thomas 'PointedEars' Lahn Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8Bit X-Trace: news.albasani.net ORtAhkf61bbpe04VESmhVUi9aqKAWFwegEwTA01x1zpHC5PMv3JLigGjDhvMgagHTkyo9pwhj9ggro0gEU/flusP0yh7UDqcgXddbW1LBrd7P8p+s5N1JZkgnPgfiMUN NNTP-Posting-Date: Fri, 8 May 2020 22:26:08 +0000 (UTC) Injection-Info: news.albasani.net; logging-data="eWi+//BMNGQu3BUaGGtYHuA1gULcTQekmssEzhW5gV1xnD6LWicXqBZVangXnYK1X8fL0givpoPjApF+nHjieqDc1fPZFBcSFxuZTUDJY9C+Dw2SlXW/QDGBB3tm6GrA"; mail-complaints-to="abuse@albasani.net" User-Agent: KNode/4.14.10 Face: 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 X-Face: %i>XG-yXR'\"2P/C_aO%~;2o~?g0pPKmbOw^=NT`tprDEf++D.m7"}HW6.#=U:?2GGctkL,f89@H46O$ASoW&?s}.k+&. Andrew Poulos writes: >> so I end up doing >> >> if (a && a.b && a.b.c && a.b.c.d) > >> Is there a way to get the check value of an object's nested property >> without first having to test for all the ascendant properties? > > if (try {obj.a.b.c.d} catch {}) > > might do what you want. This is *obviously* syntactically invalid; “try {obj.a.b.c.d} catch {}” is not an /Assignment*Expression*/, but a /Try*Statement*/. If you do not want to learn the grammar of the languages, please at least do minimal testing before you post suggestions. -- PointedEars FAQ: | | Twitter: @PointedEars2 | Please do not cc me./Bitte keine Kopien per E-Mail.