Rank Order questions in scripting

Use scripting to get, set, and unset values for Rank Order questions.

Rank Order items are zero-based. Therefore, a question with 5 items (i1, i2, i3, i4, i5) has an authored index of 0, 1, 2, 3, and 4.

Function or property	Description
`datapoint.set([1,3,0]);`	Sets and ranks Rank Order items (zero-based). The authored indexes must be within range and unique.
`datapoint.set([])`	Unsets the data point. `Set(undefined/null)` will throw an exception.
`datapoint.get() => [1, 3, 0];`	Gets the ranked items. `[]` is the default value that is returned if no items are ranked.
`dataPoint.unset();`	Removes the ranking from all ranked items and sets the question to not answered.

Example

A Rank Order question has 5 items. The zero-based authored indexes range from 0 to 4.

Rank Order question

i1 - 0

i2 - 1

i3 - 2

i4 - 3

i5 - 4

Consider the following function example:

datapoint.set([1,3,0]);

This function will return:

Ranked

Unranked