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A library for cross-browser normalization of keyboard events
Home Page: http://jonathan.tang.name/code/js_keycode
This project forked from nostrademons/keycode.js
A library for cross-browser normalization of keyboard events
Home Page: http://jonathan.tang.name/code/js_keycode
This is a library for normalizing JavaScript key codes across browsers. It's based on the article "JavaScript Madness: Keyboard Events" by Jan Wolter: http://unixpapa.com/js/key.html The normalized keycodes it generates obey the following rules: - For alphabetic characters, the ASCII code of the uppercase version - For codes that are identical across all browsers (this includes all modifiers, esc, delete, arrows, etc.), the common keycode - For numeric keypad keys, the value returned by numkey(). (Usually 96 + the number) - For symbols, the ASCII code of the character that appears when shift is not held down, EXCEPT for '" => 222 (conflicts with right-arrow/pagedown), .> => 190 (conflicts with Delete) and `~ => 126 (conflicts with Num0). This library works with key objects, which are { Int code, bool shift, bool alt, bool ctrl } JavaScript objects that record the key code along with any modifiers pressed. translate_event() returns one of these; hot_key() takes one of these and returns a string suitable for the JQuery HotKey plugin or Binny V A's shortcut.js library. So far, I've tested it on: - Firefox 2.0.0.12 for Linux - Konqueror 3.5.8 for Linux - Opera 10 for Linux - Firefox 2.0.0.16 for Windows - Firefox 3.0.3 for Windows - Google Chrome 0.2.149.30 for Windows - IE 6.0 for Windows - IE 7.0 for Windows - Opera 9.5.1 for Windows - Safari 3.0 for Windows Known bugs include: - There's no way to generate a keycode for the PrintScreen key: most browsers don't even fire a keyboard event for it. - Safari/Windows does not fire keydown events for modifier keys (shift/ctrl/alt/capslock) - Num- comes out as _ on Firefox, and Num+ appears as = (those are the unshifted keys of -/+, respectively). There's no way to avoid this; the keycodes are exactly identical. Similarly, all the keypad arithmetic keys act like their non-keypad equivalents on Konqueror/Opera 8.5, since the keycodes don't distinguish between them. Patches are welcome; that's what GitHub is for.
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