[https://tinyurl.com/yysl4neb g javascript filter] [https://tinyurl.com/yysl4neb where javascript is written] [https://tinyurl.com/y2zxs5b6 javascript map] [https://tinyurl.com/yysl4neb javascript t point] [https://tinyurl.com/y2zxs5b6 javascript array] [https://tinyurl.com/y2zxs5b6 javascript o(1) lookup] [https://tinyurl.com/yysl4neb javascript x y coordinates] [https://tinyurl.com/y2zxs5b6 javascript x is not a function] [https://tinyurl.com/y2zxs5b6 javascript is string] [https://tinyurl.com/y2zxs5b6 v javascript value]