String repeat

Kata

Write a function that accepts an integer n and a string s as parameters, and returns a string of s repeated exactly n times.

Examples (input -> output)
6, "I"     -> "IIIIII"
5, "Hello" -> "HelloHelloHelloHelloHello"

my answer

function repeatStr (n, s) {
var str="";
for(var i=0; i < n; i++)
  str+=s;
  return str;
}

function repeatStr (n, s) {
  return s.repeat(n);
}

best answer

function repeatStr (n, s) {
  return s.repeat(n);
}