Learn Basic String and Array Methods by Building a Music Player - Step 87

JavaScript
1

Tell us what’s happening:

They asked to create a nextSongExists constant that checks if a next song exists by using: userData?.songs[currentSongIndex + 1] !== undefined, but I have tried several ways and still don’t understand what is wrong :') Please help ;;;;

Your code so far

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audio.addEventListener("ended", () => {
  const currentSongIndex = getCurrentSongIndex();
  const nextSongExists = () => userData.songs[currentSongIndex + 1] !== undefined;
});

Challenge Information:

Learn Basic String and Array Methods by Building a Music Player - Step 87

2

Your code:

audio.addEventListener("ended", () => {
  const currentSongIndex = getCurrentSongIndex();
  const nextSongExists = () => userData.songs[currentSongIndex + 1] !== undefined;
});

Look carefully at userData in both and see if you can spot what you are missing in your code?

3

I did add a ? mark to it and the code still didn’t work

4

Please show me the code and the error message

5

The code:
audio.addEventListener(“ended”, () => {
const currentSongIndex = getCurrentSongIndex();
const nextSongExists = () => userData?.songs[currentSongIndex + 1] !== undefined;
});

The error message: You should check if a next song exists with userData?.songs[currentSongIndex + 1] !== undefined and set it to a nextSongExists constant.

1 Like
6

You have created a function nextSongExists not a constant

1 Like
7

Thank you! I got it.

8

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