[html5] That alt tag!
ian at hixie.ch
Mon Jun 17 14:16:36 PDT 2013
On Sun, 9 Jun 2013, Bob McClelland wrote:
> Dear Colleagues,
> Is 'alt' in or out, for validation?
You should always give an alt="" attribute containing the textual
equivalent of the image. For details and lots of help on how to do this, I
recommend reading this section of the spec:
> The validator always used to complain if I didn't have one, then
> recently it stopped doing (And I read reports that "I didn't need to use
> an alt tag any more) and today it's complaining again!
Probably just a transient bug in the validator.
> All this chopping and changing drives me potty and gives rise to two
> questions- 1) What is the current position regarding alt tags
Same as it always has been, basically. This hasn't changed.
> and 2) what's the best way to be informed whenever a change (to any part
> of the whole html5 spec) is implemented?
If you mean, how can you find out when the HTML standard is updated, then
there's a tool in the specification itself that lets you subscribe to
changes. (Note that there can be dozens of changes a day, as we're
constantly working to improve the spec.) To subscribe to these changes,
click the "Edit Subscriptions" button at the top right of this page:
On Sun, 9 Jun 2013, Jukka K. Korpela wrote:
> Any answer to your question may be outdated at any moment, even between
> the moments that someone writes an answer and someone else reads it, so
> a specific answer is not particularly interesting. You can check today's
> position in WHATWG Living HTML at
> (I suppose the structure will be retained even though the content
> changes, so this URL should work at least for a long time.)
This answer makes it sound like these things change at a whim, but they
don't. We fix errors, we provide new features, but we don't change things
that are correct.
> Some people think that generators should be allowed to omit alt
> attributes, in order to prevent them from emitting some nonsensical or
> plain wrong alt attributes.
They're not allowed to omit alt="" attributes, but it is true that the
specification does provide guidance on what to do when a generator has no
way to generate a correct alt="" attribute.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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