Javascript String repeat String

function repeatStringNumTimes(str, num) {
  // repeat after me
  var newStr = "";
  
  if (num > 0) {
    for (var i = 0; i < num; i++) {
      newStr += str;/*from   w  w  w.j a  v a  2s  .  c  om*/
    }
  } else {
    newStr = "";
  }
  
  return newStr;
}

console.log(repeatStringNumTimes("*", 3));
console.log(repeatStringNumTimes("abc", 3));
console.log(repeatStringNumTimes("abc", 4));
console.log(repeatStringNumTimes("abc", 1));
console.log(repeatStringNumTimes("*", 8));
console.log(repeatStringNumTimes("abc", -2));