Searches the string backwards for the specified substring, starting from the specified index, and returns an index to it.
Returns -1 if the substring is not found.
Parameters:
str
The string to be searched in.
search
The substring to search for.
fromIndex
The index to start the search from.
If not specified, str.len()-1
is assumed.
See Also:
indexOf()
Tip:
You may call this function in a method-like style, e.g.:
str.lastIndexOf(".")