What is a Descendant operator? Is it in javascript Or in any other language?

Question

I came across a question stating: Which on of the following is a Descendant operator:
A) ..
B) ...
C) &
D) *

WHICH IS IT? AND PLEASE EXPLAIN WHY OR REFER ANY ARTICLE OR LINK

Answer 1

The answer is A.

The .. operator is the descendant operator; you can use it in place of the normal . member-access operator :

var names = pt..name;