W3C home > Mailing lists > Public > www-validator@w3.org > June 2008

Re: XHTML script validation error

From: Jukka K. Korpela <jkorpela@cs.tut.fi>
Date: Wed, 4 Jun 2008 12:05:59 +0300
Message-ID: <012201c8c622$36156a60$0500000a@DOCENDO>
To: "Andras" <lgandras@hotmail.com>, <www-validator@w3.org>

Andras wrote:

> My suggestion is simple.

Yes, but completely wrong.

> Whenever a script is in the head on an XHTML
> 1.0 document, it should validate '<' (less than) characters:

No, it must not validate, since it is not valid. Simple as that.

By the specification of XML, "<" is only allowed at the start of a tag.

> <script type='javascript'>
> var myvar = 0;
> for (var i = 0; i < 10; i ++){

Note that the type attribute is valid but wrong (in the sense of 
violating specifications). Its value shall be an Internet media type (in 
this case, "text/javascript"), but this limitation cannot be expressed 
in the DTD, so it passes validation. Note that using a wrong type 
attribute may cause the script to be ignored - browsers may expect it to 
be in some language unknown to them.

> That's supposed to be valid, but the validator tells that the '<'
> occurred as data.

You supposed wrongly.

Note that using "&lt;" instead, though valid and correct in theory, is 
not a practical move, since in pre-XHTML HTML, rules and different, and 
IE is not understand real XHTML. The practical solution is to move the 
script to an external file and refer to it via <script 
type="text/javascript" src="foo.js"></script>

Jukka K. Korpela ("Yucca")
Received on Wednesday, 4 June 2008 09:06:14 UTC

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