Hello,
I would like to create a component that will have a TextField and a label that will count the number of characters entered by the user. This calculation is done on the client side.
I started looking for how to do this but I have some problems to implement.
Someone can give me some tracks?
In advance thank you
Aurel
It would be almost identical to my Client-Side Validated TextField, minus the validation. It captures input in onKeyUp() and displays the validation error in a element after the text field.
See the
project site
for a demo and a link to the source code. It’s a fairly simple extension of the TextField component. The most relevant source file would be
VCSValidatedTextField.java
. You wouldn’t need much server-client serialization in a component with just a counter, unless you want to have some server-side API for customizing the counter (would be very useful to have reverse counter at least).
Mmm… I suppose I could consider extending my component a bit so that it could display text in the error area also in a “valid” (and partial) situation. Then, a counter would be trivial to do with a simple JavaScript validator.
A counter would also be useful for a TextArea.