How can I add new array elements at the beginning of an array in Javascript?

Answer 1

Something like this?

var arr = [];

arr.unshift(1)
arr.unshift(2)
arr.unshift(3)

console.log(arr)
> [3, 2, 1]

Answer 2

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

The output of the above code will be something like this,
//Output
Jani,Hege,Stale,Kai Jim,Borge
Jani,Hege,Lene,Stale,Kai Jim,Borge