first argument– a list value to search
second argument– value for which to search
third argument– (optional) starting index
This function returns either the ordinal position of a list element that matches a given value or -1 (the given value is not in the list).
The following expression returns 1.
<indexOf> <list> <s>apples</s> <s>oranges</s> </list> <s>oranges</s> </indexOf>
The following expression returns 3.
<indexOf> <list <s>apples</s> <s>oranges</s> </list> <s>oranges</s> <i>2</i> </indexOf>