How do I copy PART of an input field to another field?

Question

I know how to copy an input field to something else. No prob. How do I copy part (ie. the month of a date field) to another field.

I want to take a field that is a date range (ie. 7-13-09 to 7-15-09) and copy it to two input fields (ie. the start date and end date)

Answer 1

$("#startDate, #endDate").each( function( i ) {
    $(this).val( $("#dateRange").val().split(" to ")[ i ] )
})