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Message-ID: <139484623.PyJ8SnIKrL@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Fri, 14 Mar 2014 01:08:25 +0100
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Subject: Re: Declaring global variables
Newsgroups: comp.lang.javascript
References: <6ae3i9h0e63li3380f0s84pi8h6uque0t3@4ax.com> <property-20140313151743@ram.dialup.fu-berlin.de>
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Stefan Ram wrote:

> "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> writes:
>> This seems to work, but adding the 'var' prefix throws an error, i.e.,
>> 'var window.variable = value' throws "Syntax error while loading:
>> expected ';', got '.'"
> 
>   »var« declares a (new) /variable/.
> 
>   »window.variable =« adds a /property/ to the window object,
>   or sets the value of a window property.

A very important difference indeed.  Many newcomers think the “window” 
property is a built-in identical to the global object when it is in fact a 
host-defined context-dependent property referring to a host object that 
happens to be in the scope chain in that host environment for historical 
reasons.

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