Which Chrome keyboard shortcuts cannot be overridden with Javascript?

Question

You can preventDefault() on Chrome shortcuts with JavaScript, but you can't do it with all of them.

Ctrl + S and Ctrl + F you can override.

Ctrl + W you cannot. This makes sense.

Ctrl + L though I was surprised to find you also cannot override though.

What shortcuts are overridable and which aren't in Chrome?

Answer 1

Within Chrome, here are the non-overridable commands that I have found:

Ctrl Tab, Ctrl-NTW, Ctrl-W

Most 'Ctrl-Shift' keyboard shortcuts are able to be overridden now with a few exceptions:

Ctrl Shift Tab, Ctrl-Shift-Q

Ctrl-L is now overridable along a few other new Ctrl-Shift shortcuts.