Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!texta.sil.at!newsfeed01.chello.at!newsfeed.arcor.de!newsspool4.arcor-online.net!news.arcor.de.POSTED!not-for-mail
Content-Type: text/plain; charset="ISO-8859-1"
Message-ID: <1936012.sfFm3fLmJ7@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Sat, 05 Nov 2011 14:46:12 +0100
User-Agent: KNode/4.4.11
Content-Transfer-Encoding: 7Bit
Subject: Re: defining functions
Newsgroups: comp.lang.javascript
References: <4eb4a8de$0$28686$a8266bb1@newsreader.readnews.com> <ZeWdnYj57omGICnTnZ2dnUVZ8t2dnZ2d@giganews.com>
Followup-To: comp.lang.javascript
MIME-Version: 1.0
Lines: 31
NNTP-Posting-Date: 05 Nov 2011 14:46:13 CET
NNTP-Posting-Host: 586e749e.newsspool1.arcor-online.net
X-Trace: DXC=HeYJ>_k7G:Dk:C4l9A;OcOic==]BZ:afN4Fo<]lROoRA<`=YMgDjhgBD^`i3[Q<Q2NDZm8W4\YJNL;?f@h5gMfbLBIlHSWN<J<O0K]AG>Q=STK
X-Complaints-To: usenet-abuse@arcor.de
Xref: x330-a1.tempe.blueboxinc.net comp.lang.javascript:8037

Richard Cornford wrote:

> Denis McMahon wrote:
>> [FunctionExpression vs. FunctionDeclaration]
> 
> In terms of this style of function call there is no advantage of one
> over the other.
> 
> The advantages of one over the other are that the function declaration
> is less code to write and the actual creation of the function object
> will occur unconditionally upon entering the execution context in which
> the declaration occurs. Assigning a function expression to a variable is
> necessary if the function is to be created conditionally.

To be precise, it is necessary to use a /FunctionExpression/ if the function 
is to be defined in a /Block/ statement.  Although several ECMAScript 
implementations, among them JavaScript 1.3, JScript 3.1.3510, JavaScriptCore 
525.13, Opera ECMAScript 5.02, and KJS 3.5.9, include(d) proprietary support 
for /FunctionDeclaration/ in a /Block/ statement (termed and dealt with as a 
"function statement"), such code is not portable and therefore best avoided.  
(Note that the braces of /Block/ statements are easily confused with the 
braces of a /FunctionBody/; this restriction and recommendation does _not_ 
apply to the latter.)
 

PointedEars
-- 
Anyone who slaps a 'this page is best viewed with Browser X' label on
a Web page appears to be yearning for the bad old days, before the Web,
when you had very little chance of reading a document written on another
computer, another word processor, or another network. -- Tim Berners-Lee