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Message-ID: <2476103.KEgCaNTNbC@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Sat, 22 Feb 2014 11:27:22 +0100
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Subject: Re: How to detect key pressed plus mouse click, e.g., ctrl + left click
Newsgroups: comp.lang.javascript
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Xref: csiph.com comp.lang.javascript:23193

Evertjan. wrote:

> Thomas 'PointedEars' Lahn <PointedEars@web.de> wrote on 22 feb 2014 in
> comp.lang.javascript:

It's attribution _line_, not attribution *novel*.
 
>>   if (!e) e = window.event;
>> 
>> so that the assignment only takes place when necessary.
> 
> e || window.event
> 
> will do fine.
> 
> I [most probably] all applications,
> window.event will only be called if e does convert to false.

1. Nothing will be *called* here.

2. That is beside the point; the *assignment* will take place this way
   even if not necessary.

3. If a less simple test is necessary (for example, in order to prevent
   conversion to boolean), the now simple expression will quickly become
   unreadable, and hard to maintain.

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.