Working with General Visual Components > Classes > TextBox > TextBox.BeforeChange
BeforeChange: function(sender, args, timeout);
sender. Event source.
args. Event information.
timeout. Time delay (milliseconds) after which the event is fired.
The BeforeChange event occurs on starting editing the text field.
The example of use is given in the page with description of the TextBox.AfterChange event.
See also:
