http://www.freecodecamp.com/kkas 's solution for Bonfire: Repeat a string repeat a string

bonfire-repeat-a-string-repeat-a-string#.js

// Bonfire: Repeat a string repeat a string
// Author: @kkas
// Challenge: http://www.freecodecamp.com/challenges/bonfire-repeat-a-string-repeat-a-string#
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function repeat(str, num) {
  // repeat after me
  if (num < 0) {
    return "";
  }
  
  return str.repeat(num);
}

repeat("abc", 3);