Convert between keyboard keycodes and keynames and vice versa.
JavaScript CSS Other
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Latest commit 907ed6e Mar 21, 2018

Readme.md

keycode

Simple map of keyboard codes.

Build Status

Installation

npm

$ npm install keycode

component

$ component install timoxley/keycode

Example

var keycode = require('keycode');
document.addEventListener('keydown', function(e) {
  console.log("You pressed", keycode(e))
})

API

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

Name Aliases

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 down
ins insert
del delete
spc space

keycode.isEventKey(event: Event, nameOrCode: String | Number)

Tests if an keyboard event against a given name or keycode. Will return true if the event matches the given name or keycode, false otherwise.

// assume event is an keydown event with key 'enter'
keycode.isEventKey(event, 'enter') // => true
keycode.isEventKey(event, 'down') // => false

keycode.isEventKey(event, 13) // => true
keycode.isEventKey(event, 40) // => false

Maps

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

keycode.names[13] // => 'enter'
keycode.codes['Enter'] // => 13

Credit

 project  : keycode
 repo age : 3 years, 8 months
 active   : 29 days
 commits  : 66
 files    : 13
 authors  :
    49	Tim Oxley        74.3%
     4	jkroso           6.1%
     3	Amir Abu Shareb  4.5%
     1	Greg Reimer      1.5%
     1	Kenan Yildirim   1.5%
     1	Abel Toledano    1.5%
     1	Sam              1.5%
     1	TJ Holowaychuk   1.5%
     1	Yoshua Wuyts     1.5%
     1	Nathan Zadoks    1.5%
     1	Brenton Simpson  1.5%
     1	Brian Noguchi    1.5%
     1	Gilad Peleg      1.5%

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

License

MIT