Why this recursive solution wrong?

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.

   **Your code so far**


// Only change code below this line
function countdown(n){
if(n<1) {
  return [];
}
return countdown(n-1).unshift(n);

}
// Only change code above this line

   **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36

Challenge: Use Recursion to Create a Countdown

Link to the challenge:

2

I don’t think unshift is returning what you think it does. Try running this piece of code.

console.log([1,2].unshift(3))
4

That code returns 3. Why is that? I thought unshift puts stuff in an array. Thank you for the reply btw

5

It adds an item to the beginning of the array, then returns that item (not the whole array).

2 Likes
6

Thank you sir now I know what the issue is.

7

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