Truncate a string (first argument) if it is longer than the given maximum string length (second argument). Return the truncated string with a "..." ending.

g7

// Bonfire: Truncate a string
// Author: @piqueen314
// Challenge: http://www.freecodecamp.com/challenges/bonfire-truncate-a-string
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function truncate(str, num) {
  // Clear out that junk in your trunk
  if(num <=3)
    {
      return str.slice(0,num)+"...";
    }else{
      if(str.length>num)
        {
          return str.slice(0,num-3)+"...";
        }
    }
  return str;
}

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