Capture change listener from Textfield

Hi,
Is it possible to add listener to textfield?

If we give some value to textfield then it must change the value to uppercase.

Thanks in advance,
Rashmi.

I'd suggest taking a look at the "change" event on Ext.form.field.Field. You can add a listener to any number of fields and manipulate the data on change however you see fit.

Here's an example: http://jsfiddle.net/existdissolve/PDQzy/