What are some common errors when using the reduce function in JavaScript?

What are some common errors when using the reduce function in JavaScript?

Some common errors include not returning a value from the callback, using the wrong initial value, and misunderstanding the accumulator.

Can you explain what the accumulator is?

The accumulator is the value that is returned from the previous iteration and is passed to the next iteration of the callback.

What happens if I forget to return a value in the callback?

If you forget to return a value, the accumulator will be undefined in the next iteration, leading to unexpected results.

How can I debug issues with reduce?

You can add console logs inside the callback to track the values of the accumulator and current item during each iteration.