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![Ewan McDonnell](https://secure.gravatar.com/avatar/874e5372648a64a2d69fe124cb323a56?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Ewan McDonnell
1,646 PointsI keep getting an message saying "make sure you declare the coordinates array". I've declared it using var coordinates.
I've tried a number of variants. This is my latest attempt at this exercise, to create a two-dimensional array:
var array1 = []; var array2 = [];
var coordinates = array1.concat(array2);
var array1 = [];
var array2 = [];
var coordinates = array1.concat(array2);
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript Objects</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>
1 Answer
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 PointsI'm not sure what task you are on, but here's what you should create for each of them:
- for task 1, "coordinates" should be an empty array
- for task 2, coordinates" should have another arrays inside it — and the inner one should have 2 items
- for task 3, coordinates" should have 4 other arrays in it — and each of those should have 2 items
Also, I don't think the challenge is expecting any other variables to be created. Try full fulling the requirements of each step by using array literal(s) in the assignment.