RequestPolicy/tractest — Issue #111: Placeholders & "Foreign" Origin Elements
Author: jsamuel
Created: 2011-12-22 02:40:02+00:00
State: open
Labels: extension

Reviewing Firebug extensions, came across this site:
http://blog.teuntostring.net/2009/07/announcing-log-to-netpanel.html

Regarding the screenshot img elements:

Initially, with full domain matching, and no requests allowed, the standard placeholder is shown with a empty alt attribute and a title attribute indicating the www subdomain.

Allowing requests to the www subdomain, and the placeholder is replaced with a broken image picture with an empty alt attribute and no title attribute. Additionally, a foreign origin shows up in the context menu; however, there is no visual cue that this happened.

Allowing requests from foreign origin www to parent origin blog does not result in any noticeable change; however subsquently:

Allowing requests to subdomain image finally shows the images.

Reloading the page at an intermediate step did not show the placeholder. It is believed this site demonstrates that placeholders are broken for foreign origin elements.