What is the syntax of Array containing 1 integer???

Question

var name=new Array(3);
The above statement creates empty array with length of 3 elements.
What is the syntax of Array containing 1 integer???

Answer 1

var myArr = [42];
this is an array with one element, the number 42
just another valid way to go

Answer 2

if you do
var arr=new Array()
arr(0)=1

you have an array with one integer