javascript - Find out whether Chrome console is open

Question

I am using this little script to find out whether Firebug is open:

if (window.console && window.console.firebug) {
    //is open
};

And it works well. Now I was searching for half an hour to find a way to detect whether Google Chrome's built-in web developer console is open, but I couldn't find any hint.

This:

if (window.console && window.console.chrome) {
    //is open
};

doesn't work.

EDIT:

So it seems that it is not possible to detect whether the Chrome console is open. But there is a "hack" that works, with some drawbacks:

• will not work when console is undocked
• will not work when console is open on page load

So, I am gonna choose Unsigned′s answer for now, but if some1 comes up with a brilliant idea, he is welcome to still answer and I change the selected answer! Thanks!

Answer 1

Chrome 65+ (2018)

    r = /./
    r.toString = function () {
        document.title = '1'
    }
    console.log('%c', r);