Is it possible for a JavaScript array to contain itself?

Question

In Ruby, it's possible for an array to contain itself, making it a recursive array. Is it possible to put a JavaScript array inside itself as well?

var arr = new Array();
arr[0] = "The next element of this array is the array itself."

Now how can I move arr into arr[1] so that the array contains itself recursively, (e. g., so that arr[1] is arr, arr[1][1] contains arr, arr[1][1][1] contains arr, etc.)?

Answer 1

Sure:

var a = [1];
a.push(a);

They're the same object:

a[1] === a[1][1]  // true

And a convincing screenshot: