[Seaside] onKeyUp: -> do check and enable button

[Sabine Knöfel]

Hi,

in a "register new user" page, I have a textInput where I want to check the
validity of an email address each time the user types in one character. If
the email adress is valid, the "register" button should enable.

How would you do this? Does anybody have a text snippet for me?

html textInput
	....
	onKeyUp: ????

Sabine



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