I've implemented some masking text fields which rely on the fact that
keydown is fired if someone presses a key.
I don't need the correct key code but I need to know if someone has
typed a key and has released the key ("keyup").
After this I'm looking into the current value of the text field by
calling getComputedValue() so I can see if the value matches the mask.
The problem of "keypress" is that the event is fired BEFORE the value
gets updated so getComputedValue() retreives the value without the last
typed character.
So one solution would be to have "keyup" event fired even if the keycode
is not reliable.
Fabian Jakobs schrieb:
Dietrich Streifert schrieb:
Hello list, hi Fabian,
after the changes to the key event handling I run into trouble
catching keyup and keydown events of accented characters keys like
german umlauts and keys like the plus and minus sign and the sharp sign.
I've attached a testcase which should be run from the
frontend/application/sample/source/html/test directory.
The testcase creates a simple text field which has three
eventlisteners attached: "keyup", "keydown" and "keypress".
If e.g. the "a" key is pressed all three events are fired (as expected).
If (on a german keyboard) th "a umlaut" key is pressed just the
"keypress" event is fired. This is also true for other characters like
plus, minus and sharp sign.
Shouldn't keyup and keydown be fired for every key which is pressed?
This is true for FireFox 2.0 under WinXPSP2.
It works as expexted in IE 7
The Problem is that composed characters like ä,ü, ... cannot be detected
reliably in keydown and keyup events. In general any character that
needs a compose key in any keyboard layout cannot be detected reliably.
The keycodes generated for such characters depends on the keyboard
layout. Therefore we decided to have consistent support for those keys
that are reliable.
Do you realy depend on detecting those keys in keyup/keydown events or
can you convert it to use keypress instead?
Best Fabian
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Mit freundlichen Grüßen
Dietrich Streifert
Visionet GmbH
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