Truncate a string

truncateString.js

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

    else return str;
}

truncateString("Adi", 1);