[Prototype-core] proposal: function to validate HTML

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walther diechmann

May 6, 2010, 7:33:38 AM5/6/10
to Prototype: Core
on the rebound from a 'tour de force' of W3C specs pertaining to the
DOCTYPE and it's cripling effects on IE's (not) handling improperly
written input tags I was wondering:

Given I have a HTML string
When I call Object.validate( html_string [, doc_type])
Then I can see whether the HTML string is valid

{ errors_count: 2, warnings_count: 1, errors: { 1: { line: 5, short:
'short description', help: URL }, 2: {}}, warnings: { 1: { } } } =
Object.validate( string [, string] )

with URL being a link to the non conformancy related W3C document/

Just a thought :)

BTW: You could - using the validate method - build validation into
methods like Element#replace and #update, when supplying an option or


ps. I'm in way pointing my fingers at IE which (in this case) turns
out to be the exemplary scholar in class, sticking to the standards

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T.J. Crowder

May 8, 2010, 2:07:38 AM5/8/10
to Prototype: Core

Validating HTML against a DOCTYPE is a non-trivial task, and it should
be (IMHO) an authoring-time task (using tools like the W3C
Validator[1]) rather than a runtime task, where Prototype is mostly
focussed on the latter. So I don't see adding this to Prototype. (This
is just my opinion; I'm not a core dev, I don't make decisions for the

If you're receiving HTML from an external source at runtime, I can see
the desire to validate it. For that kind of thing, you may want to
integrate with one of the validation services out there (there's a
short list here[2]) and/or look into mod_validator[3] for Apache.

[1] http://validator.w3.org/
[2] http://validator.w3.org/docs/help.html#others
[3] http://apache.webthing.com/mod_validator/

T.J. Crowder
Independent Software Consultant
tj / crowder software / com

On May 6, 12:33 pm, walther diechmann <waltherdiechm...@gmail.com>

Allen Madsen

May 8, 2010, 8:01:45 AM5/8/10
to prototy...@googlegroups.com
I agree with T.J.

Allen Madsen

Tobie Langel

May 8, 2010, 7:17:05 PM5/8/10
to Prototype: Core
Thanks for your suggestion.

This would be quite an undertaking… and falls completely out of the
scope of Prototype, so it's certainly something that won't make it's
way into Prototype Core.

Sorry for the bad news!


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