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Re: Declaring global variables

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Message-ID <139484623.PyJ8SnIKrL@PointedEars.de> (permalink)
From Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Subject Re: Declaring global variables
Newsgroups comp.lang.javascript
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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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Thread

Declaring global variables "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> - 2014-03-13 07:04 -0700
  Re: Declaring global variables "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> - 2014-03-13 07:39 -0700
    Re: Declaring global variables Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-13 16:15 -0300
      Re: Declaring global variables "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> - 2014-03-13 14:30 -0700
        Re: Declaring global variables Denis McMahon <denismfmcmahon@gmail.com> - 2014-03-13 23:12 +0000
          Re: Declaring global variables "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> - 2014-03-13 16:53 -0700
  Re: Declaring global variables Martin Honnen <mahotrash@yahoo.de> - 2014-03-13 16:15 +0100
  Re: Declaring global variables Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-14 01:08 +0100
    Re: Declaring global variables JJ <duh@nah.meh> - 2014-03-14 09:46 +0700
      Re: Declaring global variables Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-14 07:03 -0300

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