I see some code examples like this:
<DIV onmouseover="th is.style.backgr ound='blue'">
and other code examples like this:
<DIV onmouseover="ja vascript:this.s tyle.background ='blue'">
Which way is more proper? Or are both ways perfectly fine? Are there any
specifications that discuss when "javascript :" should be put in front of code?
Jul 20 '05
25  3730 
Janwillem Borleffs wrote: <de*******@no.s pam.com> schreef in bericht
news:3f******** *******@news.md .comcast.gigane ws.com...
Please shorten your attribution to one line, leaving
out information not vital to follow the discussion.
I see some code examples like this:
<DIV onmouseover="th is.style.backgr ound='blue'">
and other code examples like this:
<DIV onmouseover="ja vascript:this.s tyle.background ='blue'">
Which way is more proper? Or are both ways perfectly fine? Are there any
specifications that discuss when "javascript :" should be put in front of
code?
^^
OE Quotefix repairs borken quotes. OTOH, you could switch
to NetNews client software that works by default.
The first one is the proper way,
The statement is correct.
because the onmouseover attribute (and other event handlers)
expects the value to contain JS code only.
However, the explanation is awfully wrong.
First, values of the intrinsic event handler attributes may be of *any*
script language. The default script language can be specified with the
<meta http-equiv="Content-Script-Type" content="...">
element, defining it with the value of the `content' attribute. For
JavaScript, a value of `text/javascript' is appropriate.
The default script language is text/javascript in Mozilla/5.0 and
JScript (text/jscript?) in Internet Explorer.
Second, the `javascript:' within the event handler is considered one of
the following:
A) UAs using the IE browser component: A label specifying the script
language
B) Other UAs: A label that is ignored since no statement refers to it.
C) Incorrect syntax, which triggers a script error.
*That* is why it is wrong.
What you will also see very often, is the usage of the javascript: pseudo
protocol in anchors:
Third, `javascript :' is not a pseudo protocol (I would like give the
person who introduced that ridiculous term a good kick in the ass),
but an URI scheme.
PointedEars
Jim Ley wrote: Michael Winter wrote: For JavaScript, the MIME type is text/javascript [...]
Could you cite the relevant RFC which indicates this please? for
JavaScript (capatilised like that) the relevant one would be
application/x-javascript surely?
No for both answers. Alas, there is no standardized MIME type for
JavaScript code. Nevertheless, text/javascript is, in contrast to
application/x-javascript, widely supported and therefore used in
the HTML 4.01 Specification itself.
PointedEars
Thomas 'PointedEars' Lahn <Po*********@we b.de> writes: The default script language is text/javascript in Mozilla/5.0 and
JScript (text/jscript?) in Internet Explorer.
Both text/jscript and text/javascript will work in IE. They both
trigger the same (JScrip) interpreter.
Second, the `javascript:' within the event handler is considered one of
the following:
A) UAs using the IE browser component: A label specifying the script
language
B) Other UAs: A label that is ignored since no statement refers to it.
It can, but then it will fail in IE.
C) Incorrect syntax, which triggers a script error.
Which will not happen in any browser I have seen, since it would require
the browser to interpret the contents as something other than Javascript,
and only IE allows other languages at all.
*That* is why it is wrong.
For some value of "wrong" :)
Third, `javascript:' is not a pseudo protocol (I would like give the
person who introduced that ridiculous term a good kick in the ass),
but an URI scheme.
So, http is a protocol, but http: is an URI scheme, correct?
/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'
On Mon, 08 Dec 2003 00:56:36 +0100, Thomas 'PointedEars' Lahn
<Po*********@we b.de> wrote: It is used in the Recommendation because it is widely supported.
That doesn't work, so are lots of HTML features not included in the
spec.
The HTML WG has no more status than me or you on what is the mime-type
for js, you'll note the SVG WG say it's text/ecmascript.
You know that text/ecmascript targets a different language.
WHAT? what "different language" does it target?
Besides, that is not standardized as well.
Indeed, but it's widely supported... these should not be using any
examples that are wrong.
http://lists.w3.org/Archives/Public/...2Aug/0008.html
What about it? It's not different to what I was arguing here, it's
wrong for W3 WG's to recommend unregistered mime-types not in the x-
tree.
Jim.
--
comp.lang.javas cript FAQ - http://jibbering.com/faq/
"Lasse Reichstein Nielsen" <lr*@hotpop.com > wrote in message
news:y8******** **@hotpop.com.. .
<snip> C) Incorrect syntax, which triggers a script error.
Which will not happen in any browser I have seen, since it would
require the browser to interpret the contents as something other
than Javascript, and only IE allows other languages at all.
<snip>
According to my Netscape JavaScript 1.5 reference labels were introduced
in JavaScript 1.2 so in principal an environment supporting only
JavaScript <= 1.1 probably will consider event handling attribute code
prefixed with "javascript :" as a syntax error. But then, anyone still
using a JavaScript <= 1.1. UA is likely to be finding its use nearly
totally unproductive anyway.
Richard.
JRS: In article <3F************ **@PointedEars. de>, seen in
news:comp.lang. javascript, Thomas 'PointedEars' Lahn
<Po*********@we b.de> posted at Mon, 8 Dec 2003 00:38:14 :- Janwillem Borleffs wrote:
<de*******@no.s pam.com> schreef in bericht
news:3f******** *******@news.md .comcast.gigane ws.com...
Please shorten your attribution to one line, leaving
out information not vital to follow the discussion.
Please stop nagging on this matter.
There is no known support for your attitude in applicable standards
documents; nor in the Newsgroup FAQ.
Please also include in your own attributions sufficient material to put
the quoted material fully in context for those using off-line
newsreaders, when re-quoted in a further response.
--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 MIME ©
Web <URL:http://www.uwasa.fi/~ts/http/tsfaq.html> -> Timo Salmi: Usenet Q&A.
Web <URL:http://www.merlyn.demo n.co.uk/news-use.htm> : about usage of News.
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