onerror is not implemented

[kpreid]

Original issue 47 created by sshjason on 2008-01-25T23:04:42.000Z:

the onerror attribute is not implemented.

[kpreid]

Comment #1 originally posted by mikesamuel on 2008-01-29T00:16:59.000Z:

The onerror attribute of window?

How should it behave? If an onerror handler is specified in the global scope, it
should receive exceptions thrown by scripts in extracted script tags?

[kpreid]

Comment #2 originally posted by sshjason on 2008-01-29T01:00:14.000Z:

Mainly for data content failing to load, such as I believe the event is also raised with object tags.

[kpreid]

Comment #3 originally posted by mikesamuel on 2008-01-29T02:31:31.000Z:

Do you also require onabort?

It looks like SVG also uses those.

Do you know of any good documentation on the behavior of onerror/onabort? I get
nothing by searching for "onerror onabort site:w3.org -SVG -XmlHttpRequest".

[kpreid]

Comment #4 originally posted by mikesamuel on 2008-01-29T02:40:41.000Z:

There's some documentation at http://www.quirksmode.org/js/events_compinfo.html#t40

[kpreid]

Comment #5 originally posted by sshjason on 2008-01-29T03:53:33.000Z:

Also looks like it only loads on img tags, not object tags.

[kpreid]

Comment #6 originally posted by mikesamuel on 2008-02-19T22:35:16.000Z:

Jason,

Can you supply a testcase that you want to work?

mike

[kpreid]

Comment #7 originally posted by sshjason on 2008-02-19T23:07:28.000Z:

This would be the normal way to handle an onerror with an image:

However, due to the security issues with 'this', there is:

~/Jason Hullinger

[kpreid]

Comment #8 originally posted by mikesamuel on 2008-03-09T02:55:14.000Z:

If you add the following to your html attribute whitelist

types: [
  { "key": "IMG:ONCLICK", "description": "called if an image fails to load",
    "type": "SCRIPT", "optional": true },
  ],
allowed: ["IMG:ONCLICK"],

then onclick will be extracted and cajoled just like any other script attribute.