913773 - console.log doesn't support custom CSS

Status: RESOLVED DUPLICATE of bug 823097

(DevTools :: Console, defect)

Description

[phi2x]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0 (Beta/Release)
Build ID: 20130814063812

Steps to reproduce:

I tried to launch the console.logtro demo found here:
http://sandbox.photonstorm.com/console.log/

The graphics are rendered in sort of "ANSI mode" in the browser console.


Actual results:

On Firefox, the graphics are not interpreted by the console. Firefox doesn't render the background attribute of text chars.


Expected results:

On Chrome, the demo output is OK on the browser console.
I expected Firefox to do the same.

Comment 1

[phi2x]

I found some more explanations here:
http://stackoverflow.com/questions/7505623/colors-in-javascript-console

"It turns out Firebug has supported custom CSS for console.logs since 2010 and Chrome support has been added as of Chrome 24.

console.log('%c Oh my heavens! ', 'background: #222; color: #bada55', 'more text');

When %c appears anywhere in the first argument, the next argument is used as the CSS to style the console line. Further arguments are concatenated (as has always been the case)."

Comment 2

[Mihai Sucan [:msucan]]

Thank you for the bug report. This is a known issue.