The options property contains an array of Option
objects, each of which describe one of the selection options
presented within the Select object select. The
options.length property specifies the number of
elements in the array, as does the
select.length property. See the Option
object for further details.
In Navigator 3.0, you can modify the options displayed in a
Select object in any of the following ways:
If you set options.length to 0, all options in the
Select object will be cleared.
If you set options.length to a value less than the
current value, then the number of options in the Select
object will be decreased, and those and the end of the array
If you set an element in the options array to
null, then that option will be removed from the
Select object, and the elements above it in the array will
be moved down, changing their indices, to occupy the new
space in the array.
If you create a new Option object with the Option()
constructor (see the Option reference entry), you can add
that option to the end of list of options in the Select
object by assigning the newly created option to a position at the
end of the options array. To do this, set