Re: Definition of a script in JavaScript

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From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups	comp.lang.javascript
Subject	Re: Definition of a script in JavaScript
Date	Thu, 05 Feb 2015 17:40:37 +0100
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Denis McMahon wrote:

> On Wed, 04 Feb 2015 19:36:08 +0000, Stefan Ram wrote:
>>   Where does the MDN give the syntax for what one can write in the file
>>   »javascript.js«?
> 
> Perhaps this is the page you are looking for?
> 
> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/
> Lexical_grammar

Doubtful, since the *syntactical* grammar was sought after.

> Or maybe this one is:
> 
> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/
> Statements

Closer, but still not a grammar as in the Specification, unfortunately.
It should not be too difficult to use the grammars in the Specification
as template for a (Mozilla) JavaScript grammar.

> [W3C definition of “script”]
> In the normal sense, "program code" is generally expected to conform to
> some syntax specified for the computer language it is written in. In the
> case of Javascript, to paraphrase W3C:

There is no “Javascript”.

> "The most common scripting language ECMAscript (more widely known as
> JavaScript) which is developed by Ecma."

Except for “ECMAscript”, that statement is correct.  The ECMAScript Language 
Specification (all Editions) also includes a definition for “scripting 
language”.  I have quoted and cited it in the ECMAScript Support Matrix and 
in my thesis (see sig).  A script then is a computer program written in a 
scripting language.

> So whether you like it or not, your journey probably ends at the
> ECMAScript language specification.

It is just beginning there, and so is yours, since you are still talking 
about your “Javascript” fantasy.  The ECMAScript Language Specification 
makes it clear that and how conforming implementations are allowed to differ 
from one another.  Once one has accepted that basic fact, one can readily 
observe the differences between implementations, making it foolish to use 
one term *other* than “ECMAScript implementations” for all those 
implementations.

-- 
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
Please do not cc me. / Bitte keine Kopien per E-Mail.

Thread

Re: Definition of a script in JavaScript Denis McMahon <denismfmcmahon@gmail.com> - 2015-02-04 22:39 +0000
  Re: Definition of a script in JavaScript Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-02-05 17:40 +0100
    Re: Definition of a script in JavaScript Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-02-05 17:47 +0100

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