why browsers editing shortcut is the same as emacs default shortcut?

Question

Things like ctrl-a , ctrl-e , ctrl-f, ctrl-b, ctrl-n, ctrl-p, ctrl-k, ctrl-d.

When you edit in a normal html form in any browser I know (IE not included), the shortcuts above works the same as in emacs ?

(When I say normal form , I mean a html form without any interactive js stuff. )

Thank you for answering.

Answer 1

Because these are the key-bindings that God intended for us to use.

Answer 2

It is because your browser uses the readline library. The keybindings depend on the OS Actually. You can even configure the keybindings editing the ~/.inputrc file. You can read more at the readline manual here