Use one text attribute for another

Is it possible to use one attribute's text value as the default text value for another? example; <input type="text" name="attr_foo" value="@{foo2}"> <input type="text" name="attr_foo2" value="hello world"> I would like for @{foo} to show "hello world" on the sheet(unless it's overwritten with a new value.), but it only shows "@{foo2}". Script workers perhaps? Thanks

A sheet worker could do it, and obviously it would work with an autocalc field.

Brian said: A sheet worker could do it, and obviously it would work with an autocalc field. I can't use an autocalc/disabled field for my use case.  ;-( Sheet worker's it is. Thanks