keycode

Convert between keyboard keycodes and keynames and vice versa.

keycode

Simple map of keyboard codes.

$ npm install keycode
$ component install timoxley/keycode
var keycode = require('keycode');
document.addEventListener('keydown', function(e) {
  console.log("You pressed", keycode(e))
})

keycode tries to make an intelligent guess as to what you're trying to discover based on the type of argument you supply.

##keycode(keycode:Event)

Returns the name of the key associated with this event.

document.body.addEventListener('keyup', function(e) {
  console.log(keycode(e)) // prints name of key 
})

Due to the keypress event being weird,keycodecurrently does not support the keypress event, but this should not be an issue as keydown and keyup work perfectly fine.

##keycode(keycode:Number)

Returns the lowercase name of a given numeric keycode.

keycode(13) // => 'enter' 

##keycode(name:String)

Returns the numeric keycode for given key name.

keycode('Enter') // => 13 
 
// keycode is not case sensitive 
keycode('eNtEr') // => 13 

Common aliases are also supplied:

> for (var alias in keycode.aliases) { console.log(alias, keycode(keycode(alias))) }
ctl ctrl
pause pause/break
break pause/break
caps caps lock
escape esc
pgup page up
pgdn page up
ins insert
del delete
spc space

Key code/name maps are available directly as keycode.codes and keycode.names respectively.

keycode.names[13] // => 'enter' 
keycode.codes['Enter'] // => 13 
 project  : keycode
 repo age : 2 years, 4 months
 active   : 19 days
 commits  : 48
 files    : 13
 authors  :
    26  Tim Oxley        54.2%
    10  Tim              20.8%
     4  jkroso           8.3%
     3  Amir Abu Shareb  6.2%
     1  TJ Holowaychuk   2.1%
     1  Nathan Zadoks    2.1%
     1  Kenan Yildirim   2.1%
     1  Yoshua Wuyts     2.1%
     1  Greg Reimer      2.1%

Original key mappings lifted from http://jsfiddle.net/vWx8V/ via http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes

MIT