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Message-ID: <2254161.6ScPoEuqDY@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Wed, 29 Jan 2014 15:39:11 +0100
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Subject: Re: I thought I understood JavaScript till they asked me this on a job interview
Newsgroups: comp.lang.javascript
References: <b3e79681-ee2f-45bb-bcac-39505315bfde@googlegroups.com> <aovhe9deho4vo7pnd6gsv3van71moamck1@hive.bjoern.hoehrmann.de>
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Xref: csiph.com comp.lang.javascript:22872

Bjoern Hoehrmann wrote:

> So you need to consult documentation for the `setTimeout` function, say
> 
> 
https://developer.mozilla.org/en/docs/Web/API/window.setTimeout#The_.22this.22_problem
> 
> which says
> 
>   Code executed by setTimeout() is run in a separate execution context
>   to the function from which it was called. As a consequence, the this
>   keyword for the called function will be set to the window (or global)
>   object; it will not be the same as the this value for the function
>   that called setTimeout.

You should not blindly believe everything you read.

> So the correct answer is, for the problem case, "same as the value of
> the `x` property on the global object".

No, it is not.  The correct answer is “depends”, as I have explained 
already.

-- 
PointedEars

Twitter: @PointedEars2
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