Handling hotkeys with javascript

I wanted to use hotkeys to control content in my project. I pressed esc - the dialog box was closed, ctrl + left - the next section opened ... I rummaged through Google-Yandex and, not finding the ideal, decided to write my solution.
Now I have it - small, light, independent from other libraries.
It is enough for me to connect a javascript file and write

$e( 'ctrl esc' ).bind( "alert('');" );

Ready javascript can be found here .
UPD Improved code. Thank you, Yeah , aubt .

Read more about the possibilities

$ E () function

$ e (param0 [[, param1 [, param2 ...]])
The function accepts a list of hot keys (case-insensitive, separated by spaces or "+") for which you want to hang an action.
Understands: alt, shift, ctrl, meta, esc, enter, up, down, left, right, tab, space, pageup, pagedown, home, end, Latin letters (a-zA-Z), numbers (0-9 ), character codes (10-128);
In addition, there are special words keyup, keydown, keypress, which indicate which action to respond to (by default - keyup).
It must be remembered that browsers may or may not trigger events depending on its type.
Returns the context.

Examples:

$e( 'esc' )
$e( 'keyup Ctrl+left' , 'meta left keyup' )


.Bind () function

.bind (param)
It takes a function or javascript, which will be assigned to the key combination passed by the $ e () function.
')
Examples:

$e( 'esc' ).bind( 'alert("!")' )
$e( 'keyup Ctrl+left' , 'meta left keyup' ).bind(do_foo)


Function .unbind ()

.unbind ([param])
Unlink an action from the shortcut key passed by the $ e () function.
If the parameter is empty, then all actions will be unbound from this combination.

Example:

$e( 'esc' , 'keyup Ctrl+left' , 'meta left keyup' ).unbind()

The $ e.start () function

Starts listening to keys.
Listening also turns on by itself when using the .bind () function.

The $ e.stop () function

Stops listening to keys.

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