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From: Jake Jarvis <pig_in_shoes@yahoo.com>
Newsgroups: comp.lang.javascript
Subject: Re: Simulate goto
Date: Wed, 28 Dec 2011 23:18:22 +0100
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Message-ID: <9m1iteFodiU1@mid.uni-berlin.de>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.javascript:9744

On 28.12.2011 19:10, Thomas 'PointedEars' Lahn wrote:
> John G Harris wrote:
>
>> Thomas 'PointedEars' Lahn wrote:
>>> Tom de Neef wrote:
>>>> The error may have more to do with 'continue' than with the label.
>>>> Check where you can use a continue statement - I think it is restricted
>>>> to for- and while- loops.
>>> You are mistaken.  The `continue' statement, like the Labelled Statement
>>> is just another /Statement/, and it can be located anywhere in a
>>> /Program/:
>>
>> Now look at section 12.7 of ECMAScript 262, 5.1 Edition, at the text
>> following
>>     "A program is considered syntactically incorrect if either of
>>      the following is true:"
>> which disagrees with you.
>
> No, but it disagrees with the implications of my statement regarding this
> problem.  A `continue' statement *can* be located anywhere in a /Program/.
> However, there are restrictions as to location of the label that may be
> referred by the optional /Identifier/.
>
> AIUI, it should be possible to use an enclosing /Statement/ (like a /Block/
> statement) and a `break' statement here (section 12.8):
>
>    function testGoto()
>    {
>      var isFirst = true;
>      if (true)
>      {
> skipPoint:
>        window.alert("Using goto\n");
>
>        if (isFirst)
>        {
>          isFirst = false;
>          break skipPoint;
>          window.alert("This part is skipped");
>        }
>      }
>    }
>
> However, Google V8 3.5.10.9+ in Chromium 15.0.874.121 (Developer Build
> 109964 Linux) considers that a syntax error as well (same error message:
> "SyntaxError: Undefined label 'skipPoint'").  Is this a bug?
>

No.
Why should it work?
I think there is slight confusion as to what it means for a statement to 
be 'enclosing' another.

-- 
Jake Jarvis