AppleScript - JavaScript execution on Firefox

Question

Safari and Chrome can execute JavaScript via AppleScript

Safari:

 tell application "Safari"
    open location "http://example.com"
    activate
    do JavaScript "alert('example');" in current tab of first window
end tell

Chrome:

tell application "Google Chrome"
    open location "http://example.com"
    activate
    execute front window's active tab javascript "alert('example');"
end tell

Is there a way to do this in Firefox?

Note: Same question for Opera is here: AppleScript - JavaScript execution on Opera

I thought about asking them together, but I decided to ask two separate questions to be able to accept answers separately.

Answer 1

Running javascript using AppleScript in Firefox has not been implemented. Bug Story.
It is in New state and with no assignees. You could take that up :)