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

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

Some common errors include not returning a value from the callback function, using the wrong context, and modifying the original array.

Can you explain why not returning a value is a problem?

Not returning a value means the new array created by map will contain 'undefined' for those iterations, leading to unexpected results.

What happens if I modify the original array inside the map function?

Modifying the original array can lead to unpredictable behavior, as the map function relies on the original array's state during its execution.

How can I avoid these errors?

To avoid these errors, always return a value from the callback, avoid side effects, and test your code with different scenarios.