Disable Javascript's Domain Restrictions In Ff 7.0

I am developing a small html + JS app for my own use and being ability to access IFrame's content or opened windows' contect with Javascript would greatly improve my productivity.

Solution 1:

I think I remember a similar issue a while ago in FF. This is worth a try:

There's a file in your user profile called prefs.js. On my machine its located:

C:\Users\simon\AppData\Roaming\Mozilla\Firefox\Profiles\aoagj1zo.default

In the file are a bunch of lines like this:

user_pref("accessibility.typeaheadfind.flashBar", 0);
user_pref("app.update.lastUpdateTime.addon-background-update-timer", 1317146699);

Try adding this line:

user_pref("capability.policy.default.XMLHttpRequest.open", "allAccess");

You should probably close FF, edit this file, then reopen FF.