[whatwg] [WebForms2] custom form validation notifications without scripting

Joao Eiras joao.eiras at gmail.com
Tue Oct 3 20:08:52 PDT 2006

Na , Brad Fults <bfults at gmail.com> escreveu:

> On 10/3/06, Joao Eiras <joao.eiras at gmail.com> wrote:
>> Although WebForm2 provides automatic validation of form content from the
>> UA side, the specification has a few gaps related to customizablility of
>> notifications, by web authors, without scripting enabled.
>> If the user fills a form in an improper way the UA should alert him of  
>> the
>> problems. Opera in the early days of its initial web forms support  
>> showed
>> an alert box stating that the information was invalid, now it flashes  
>> the
>> input field, and presents a message overlapped in the webpage.
>> However it presents a very generic error message like "You must set a
>> value!" (for required) or "foo is not in the format this page requires"
>> (for pattern).
>> The author may want, in the case of an error, to present its custom  
>> error
>> message to the end user.
>> This could be achieved by declaring new custom attribute for the several
>> controls, which could hold the message. The UA could then either pop up
>> that message to the user or embed it in the page (like Opera does
>> currently).
>> The attribute could be named like requirederr, patternerr, or use some
>> other sort of naming convention to easily associate the constraining
>> property with the message attribute.
> Is the use of the title attribute inappropriate for this case?

I believe title is used for a berief description, not for error messages,  
besides a control may not validate for more than one reason.

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