- From: Ken Geis <kgeis@berkeley.edu>
- Date: Wed, 16 Apr 2014 13:25:37 -0700
- To: "Jukka K. Korpela" <jkorpela@cs.tut.fi>
- CC: "www-validator@w3.org" <www-validator@w3.org>
> The drafts thinks otherwise, and I think it's more logical. Thank you for additional clarity! With the minds on these specs, it was highly unlikely that I was going to find a real issue with them. Please disregard my complaints about both the spec and the validator. Ken On 04/16/2014 12:41 PM, Jukka K. Korpela wrote: > 2014-04-16 21:00, Ken Geis wrote: > >> I guess I have a problem with the spec. > > HTML5 CR is still a draft, though probably close to being final. > Issues with it are best discussed in the www-html list. > >> I believe that if my select is >> required and I have an option selected, then I should not need a >> placeholder. > > The drafts thinks otherwise, and I think it's more logical. If an > option is initially selected, due to the attribute, then the select > control always has a value. Unless that value is set to the empty > string (<option selected value="">), which would be rather anomalous, > there is no point in using the attribute required. It would express a > requirement that is always fulfilled. > >> From what I've read, the following situation would be >> legitimate in HTML 4.01 but not in HTML 5. >> >> <!DOCTYPE html> >> <title>test</title> >> <select size=1 required> >> <optgroup label=jkldf> >> <option selected>hello >> </optgroup> >> </select> > > The attribute required is not in HTML 4.01 at all. > > In HTML5, you can use that attribute to make user input required (in a > sense described in the draft: trying to submit the form fails if no > input has been given etc.). For a <select> element, this means that > the user must make a choice. This is incompatible with the idea of > setting a default value. > > So this is not just about validation, but also functionality. > > What if the attribute selected is not there? Well, the traditional > behavior of browsers is that they act as if the first option were > pre-selected. So to make input (selection of some option) required, > you need to play the game where you have a dummy first option with > value="". It gets pre-selected (even if the attribute selected is not > used), but with an empty value, it does not satisfy the requiredness > constraint. That is, the user is "forced" to select some real option. > > Yucca >
Received on Wednesday, 16 April 2014 20:26:06 UTC