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Key Constants

Dojo provides normalized constants for all the available keys you can press, which is passed in an Event Object when using dojo.connect.

Available Keys

Dojo provides the following keycode constants in the namespace dojo.keys. These are provided in Base Dojo (dojo.js):

  • BACKSPACE
  • TAB
  • CLEAR
  • ENTER
  • SHIFT
  • CTRL
  • ALT
  • META - the apple key on macs
  • PAUSE
  • CAPS_LOCK
  • ESCAPE
  • SPACE
  • PAGE_UP
  • PAGE_DOWN
  • END
  • HOME
  • LEFT_ARROW
  • UP_ARROW
  • RIGHT_ARROW
  • DOWN_ARROW
  • INSERT
  • DELETE
  • HELP
  • LEFT_WINDOW
  • RIGHT_WINDOW
  • SELECT
  • NUMPAD_0
  • NUMPAD_1
  • NUMPAD_2
  • NUMPAD_3
  • NUMPAD_4
  • NUMPAD_5
  • NUMPAD_6
  • NUMPAD_7
  • NUMPAD_8
  • NUMPAD_9
  • NUMPAD_MULTIPLY
  • NUMPAD_PLUS
  • NUMPAD_ENTER
  • NUMPAD_MINUS
  • NUMPAD_PERIOD
  • NUMPAD_DIVIDE
  • F1
  • F2
  • F3
  • F4
  • F5
  • F6
  • F7
  • F8
  • F9
  • F10
  • F11
  • F12
  • F13
  • F14
  • F15
  • NUM_LOCK
  • SCROLL_LOCK
  • copyKey - this is a “virtual key” that is either CTRL on Windows, or the meta key (a.k.a. apple key) on Macintoshes, since cut and paste on Windows is performed using CTRL (CTRL-X, CTRL-C, and CTRL-P) whereas it’s performed using META (META-X, META-C, and META-P)

Key Event Modifiers

Any keyboard event will have the following boolean attributes:

  • ctrlKey
  • altKey
  • shiftKey
  • metaKey

They indicate if the control, alt, shift, or meta key was held down while the other key (alphanumeric or punctuation) was pressed.

For example, pressing CTRL-A will produce an onkeypress event like {charOrCode: ‘a’, ctrlKey: true}