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Posted by Jerry Stuckle on 07/11/06 23:17
Andy Hassall wrote:
> On Tue, 11 Jul 2006 17:36:20 -0400, Jerry Stuckle <jstucklex@attglobal.net>
> wrote:
>
>
>>Mel wrote:
>>
>>>On 2006-07-11 21:52:53 +1000, Jerry Stuckle <jstucklex@attglobal.net> said:
>>>
>>>
>>>>The HTML validator on w3.org is decent, but it doesn't handle
>>>>javascript very well. I just ignore the errors in javascript; for
>>>>instance, something like:
>>>>
>>>> j=4&i;
>>>>
>>>>The "&i" is not a valid html entity - but it's valid javascript code.
>>>>And this javascript wouldn't work:
>>>>
>>>> j = 4%amp;i;
>>>
>>>No, it wouldn't, but valid XHTML _requires_ you to preclude the embedded
>>>JavaScript with the appropriate CDATA marker. The character '&' is
>>>reserved by the markup just like '>' and '<'. Not adhering to the
>>>outlined standards simply encourages bad markup and makes cross-browser
>>>compatibility more difficult. It's a big stretch to equate cross-browser
>>>issues with unencoded ampersands, but it's not that difficult to deal
>>>with. Javascript has some functional string methods for encoding HTML
>>>entities.
>>
>>Who said anything about XHTML? This is straight html.
>>
>>And the point is - this is valid javascript, but the validator on w3.org
>>doesn't recognize it as such. Therefore it spits out errors where there
>>are none.
>
>
> Yes, this seems to be backed up by HTML 4.01 appendix B.3.2, which even has an
> example of the contents of a <script> element in VBScript using & as a string
> concatenation operator.
>
> http://www.w3.org/TR/html4/appendix/notes.html#notes-specifying-data
>
> It discusses how to avoid accidentally closing the <script> element, but seems
> to indicate that & doesn't start a character reference inside <script>, as
> that's automatically CDATA. So validators producing errors in this case would
> appear to be wrong.
>
> However, validator.w3.org currently handles the example given without error. I
> uploaded the following:
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict //EN"
> "http://www.w3.org/TR/html4/strict.dtd">
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-15">
> <title>Page</title>
> </head>
> <body>
>
> <script type="text/javascript">
> j=4&i;
> </script>
>
> </body>
> </html>
>
> It responded:
>
> This Page Is Valid -//W3C//DTD HTML 4.01 Strict //EN!
>
> (it also validates as Transitional, unsurprisingly) Has its behaviour changed
> recently? Did it used to produce errors in this case?
>
> The "HTML Tidy" validator as used in the HTML Validator Firefox extension also
> accepts & within <script> without complaint, and correctly complains about "</"
> appearing in the script source.
>
Andy,
They might have fixed it. I hope so. I've had problems with it before.
I just ignore any errors within <script> elements.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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