Olawale/FreeCodeCamp Algorithm: Truncate a String

truncate_a_string.js

function truncateString(str, num) {
  //if num is less or equal to 3
  if (num<=3) {
    //setting up variable word, where str is equal to num letters + ... (starting ar zero, going through num length)
    var word = str.slice(0, num) + ('...');
    //returning word
    return word;
    //if num is longer or equal to str length
    } else if (num >= str.length) {
      //setting up variable fullWord where str is equal to num letters (starting at 0, going through num length)
      var fullWord = str.slice(0, num);
      //returning fullWord
      return fullWord;
      //in any other cases
    } else {
      // setting up variable shortWord, where str is sliced from the end to -length of str - num; removing additional 3 letters so ... can take           their space
      var shortWord = str.slice(0, -(str.length-num)-3) + ('...');
      //returning shortWord
      return shortWord;
    }
  
}

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