ui.Textbox.onChange

Registers a callback that's called when text in the textbox changes.

In particular, the callback is called when:

  - The user types a new value and then either the textbox loses focus or the user presses enter.

  - A new value is set programmatically with set('value', newValue).

Returns an ID which can be passed to unlisten() to unregister the callback.

Usage	Returns
Textbox. onChange (callback)	String

Argument	Type	Details
this: ui.textbox	ui.Textbox	The ui.Textbox instance.
callback	Function	The callback to fire when the text changes. The callback is passed the text currently in the textbox and the textbox widget.