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Rev

2

Thanks T.J. Where would I find a reference for this? Not that I don't believe you, I'm just curious! ...I see you just added that, thanks. So, even for those not using jquery, .which is a better choice?

ScottE
– ScottE

2010-12-17 14:55:52 +00:00
Commented Dec 17, 2010 at 14:55
7

@ScottE: If not using jQuery, you have to handle this explicitly yourself. I usually do it like this var key = event.which || event.keyCode; That will use event.which if it's defined and not falsey, or event.keyCode if which is undefined or falsey. Technically I should probably do var key = typeof event.which === "undefined" ? event.keyCode : event.which; but if event.which is 0 (can it be 0?), I'm unlikely to care for the kinds of things I do.

T.J. Crowder
– T.J. Crowder

2010-12-17 15:02:47 +00:00
Commented Dec 17, 2010 at 15:02
2

@ScottE, here is a basic reference: quirksmode.org/js/keys.html (it doesn't include which, which I think is only provided by jQuery but I'm not 100% sure, but it should get you started on seeing differences in browsers)

Mottie
– Mottie

2010-12-17 15:05:53 +00:00
Commented Dec 17, 2010 at 15:05
1

@fudgey: which is provided for keypress by all browsers except IE. And quirksmode is not authoritative here. As a reference, the link that @T.J. Crowder posted is much better: unixpapa.com/js/key.html.

Tim Down
– Tim Down

2010-12-18 12:11:33 +00:00
Commented Dec 18, 2010 at 12:11
5

@T.J. Crowder: Yes, the event's which property can be zero, and this can make a big difference to most applications. For example, non-printable keys in Firefox have a which property of zero and the same keyCode property as keydown. The Home key has a keyCode of 36 on my PC in Firefox, which is the character code for "$", which would make it impossible to distinguish between the user pressing the Home key and the user typing a $ character using event.which || event.keyCode.

Tim Down
– Tim Down

2010-12-18 12:31:03 +00:00
Commented Dec 18, 2010 at 12:31

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