Duplicate an array an arbitrary number of times (javascript)

Question

Let\'s say I\'m given an array. The length of this array is 3, and has 3 elements:

var array = [\'1\',\'2\',\'3\'];

Eventually I will need

Answer 1

Basic but worked for me.

var num = 2;

while(num>0){
array = array.concat(array);
num--}