http://www.freecodecamp.com/mtroiani 's solution for Bonfire: Truncate a String

gistfile1.txt

// Bonfire: Truncate a string
// Author: @mtroiani
// Challenge: http://www.freecodecamp.com/challenges/bonfire-truncate-a-string
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function truncate(str, num) {
  if (num <= 3) {
    return str.slice(0,num) + "...";
  }
  else if (num >= str.length) {
    return str;
  }
  else {
    return str.slice(0,num - 3) + "...";
  }
}

truncate("A-tisket a-tasket A green and yellow basket", 11);