On Fri, 18 Dec 2009 01:51:44 +0100, Simon Pieters sim...@opera.com wrote:
On Thu, 17 Dec 2009 22:58:03 +0100, Simon Pieters sim...@opera.com
wrote:
I asked Philip to provide some data about pages using empty attributes
for these:
Philip` zcorpan: http://philip.html5.org/data/empty-url-attributes.txt
Philip` zcorpan:
http://philip.html5.org/data/empty-url-link-attributes.txt
I have not looked at these yet,
(and still haven't, just made the data slightly more digestible)
I've now looked at a selection of random URLs.
Conclusion: None of these seem to need a request to be made. img should
fire an error event. iframe and frame should use about:blank.
but it would probably be good to do so before changing things, so we
have an idea what the compat impact is.
http://simon.html5.org/dump/empty-url-attributes.xml
img src, 3221 occurrences
Some pages use these as spacers.
http://10-0-1-1.category.datapicks.com/.html has:
img alt=! Advanced Applet Suite
onerror=this.src='http://www.datapicks.com/icon.gif'; src=
align=left border=0 vspace=3 hspace=5 width=32 height=32
...which suggests that we need to fire an error event (the page works as
intended in Chrome and but has broken image boxes in Opera and Firefox).
Similarly
http://dailysofts.com/program/366/5247/MacDrive_6_for_Windows.html has:
img alt=Stamp It onerror=this.src='/icon.gif'; src= align=left
border=0 height=32 width=32
http://album.cando360.com/photo/personal_2453.html has:
img src= id=GlobalUserLogined_MyHeaderImg /
...which seems like something that is filled in when the user is logged
in, maybe with script.
Similarly
http://managedhealthcareexecutive.modernmedicine.com/mhe/article/articleDetail.jsp?id=367917sk=date=%0A%09%09%09pageID=2
has:
img id=randomImage src= alt=Word Verification Image Loading, please
wait.../
script src, 248 occurrences
These seem to be mostly not-filled-in boiletplate.
iframe src, 1862 occurrences
These seem to just want to get an about:blank iframe for various reasons.
video src, 0 occurrences
video poster, 0 occurrences
audio src, 0 occurrences
object data, 0 occurrences
embed src, 74 occurrences
These seem to be not-filled-in object/embed plugin boilerplates. Not sure
if they need to invoke the plugin (from type or other) or not.
source src, 0 occurrences
input src, 55 occurrences
Not sure what to make of these. Some are not type=image, some seem to be
invisible submit buttons...
command icon, 0 occurrences
html manifest, 0 occurrences
applet code, 0 occurrences
frame src, 53 occurrences
Mostly a blank main frame getting filled in with script or by clicking a
link in another frame.
body background, 1665 occurrences
Pages with no background image...
http://simon.html5.org/dump/empty-url-link-attributes.xml
link rel=icon, 243 occurrences
Not-filled-in boilerplate.
link rel=prefetch, 0 occurrences
link rel=stylesheet, 115 occurrences
Not-filled-in boilerplate.
--
Simon Pieters
Opera Software
