Comments on: capturing + (plus key) with keymaster.js http://www.paulferrett.com/2012/capturing-plus-key-with-keymaster-js/ ...coding in (mainly) PHP and MySQL Thu, 11 Apr 2013 14:23:12 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Mo http://www.paulferrett.com/2012/capturing-plus-key-with-keymaster-js/comment-page-1/#comment-1272 Mo Mon, 09 Jul 2012 08:20:14 +0000 http://www.paulferrett.com/?p=170#comment-1272 “=” and “+” don’t always share the same keyCode for keydown events in JavaScript. I’ve had similar issues in the past when handling keyboard events. Frustratingly, key codes can be different across different browsers and operating systems.

In Safari & Chrome on Mac, = has code 187 and + has code 187.
In Firefox on Mac, = has code 61 and + has code 107.
In Firefox on Windows, = has code 107 and + has code 107.
In IE on Windows, = has code 187 and + has code 107.
In Chrome on Windows, = has code 187, + has code 187 and the numpad + has code 107.

To differentiate between codes that are the same for a keydown, I think you’d have to look at the keypress charCodes for them as they will be different. But as you say, what you’ve got is a trivial trade-off so it’s probably not worth the effort!

I hadn’t seen keymaster.js before – looks pretty neat! You could add more to its special mappings array to declare “plus: 107″ and “equals: 61″ then have key(‘=, shift+=, plus, shift+equals’, …) to be able to catch +’s for IE and Firefox Mac.

]]>