Truncate a String - Simpler Solution

Tell us what’s happening:
After solving this problem, and looking at the given solution, why was it necessary for all the conditionals? Is there something missing with my solution? Like a case?

Here is a link to the given solution.

Your code so far


function truncateString(str, num) {
  const ending = "...";
  if(str.length > num) {
    let shortString = str.slice(0,num);
    return shortString.concat(ending);
  } else {
     return str;

truncateString("A-tisket a-tasket A green and yellow basket", 8);


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Link to the challenge:

The solution was written when the challenge was more complicated than it currently is.

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