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| From | Gregor Kofler <usenet@gregorkofler.com> |
| Newsgroups | comp.lang.javascript |
| Subject | Re: what does var adc = adc || {}; mean? |
| Date | Wed, 27 Jun 2012 19:28:46 +0200 |
| Organization | A noiseless patient Spider |
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Am 2012-06-27 16:59, von kristoff meinte:
> var adc = adc || {};
>
> im building an object .. but why is the logical or there? any insite?!
>
> is it 'create adc' but if adc exists - then use adc .. ?
Sort of. If adc evaluates to false (boolean false, undefined, 0, ...)
adc is initialized as empty object, otherwise adc keeps its value or
reference.
Gregor
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what does var adc = adc || {}; mean? von kristoff <mrjcnicolas@gmail.com> - 2012-06-27 07:59 -0700
Re: what does var adc = adc || {}; mean? Mike Winter <usenet@michael-winter.me.invalid> - 2012-06-27 18:04 +0100
Re: what does var adc = adc || {}; mean? Gregor Kofler <usenet@gregorkofler.com> - 2012-06-27 19:28 +0200
Re: what does var adc = adc || {}; mean? Gene Wirchenko <genew@ocis.net> - 2012-06-27 14:17 -0700
Re: what does var adc = adc || {}; mean? Gregor Kofler <usenet@gregorkofler.com> - 2012-06-28 00:32 +0200
Re: what does var adc = adc || {}; mean? Gene Wirchenko <genew@ocis.net> - 2012-06-27 19:22 -0700
Re: what does var adc = adc || {}; mean? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-06-30 10:54 +0200
Re: what does var adc = adc || {}; mean? von kristoff <mrjcnicolas@gmail.com> - 2012-06-27 11:46 -0700
Re: what does var adc = adc || {}; mean? Scott Sauyet <scott.sauyet@gmail.com> - 2012-06-28 06:53 -0700
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