Learn Modern JavaScript Methods By Building Football Team Cards - Step 26

Tell us what’s happening:

Inside the setPlayerCards function, start by adding the map method to arr that will take in an empty callback function. Then, use the addition assignment += operator to assign the new array to playerCards.innerHTML .

I have no idea what is a callback, or an empty callback. This is not explained in the tutorials so far. What should I do to take in an empty callback function for arr.maps()?

Your code so far

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playerCards.innerHTML += arr.map();

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Challenge Information:

Learn Modern JavaScript Methods By Building Football Team Cards - Step 26

I think that callbacks were explained in step 13 of

Learn Basic String and Array Methods by Building a Music Player