What are some common mistakes when using array methods in JavaScript?

What are some common mistakes when using array methods in JavaScript?

Some common mistakes include not understanding the difference between map and forEach, or mutating the original array when using methods like splice.

Can you explain the difference between map and forEach?

Sure! map creates a new array with the results of calling a provided function on every element, while forEach executes a provided function once for each array element but does not return a new array.

What happens if I use splice incorrectly?

Using splice incorrectly can lead to unintended mutations of the original array, which might cause bugs in your code.

How can I avoid these mistakes?

To avoid these mistakes, always read the documentation, practice with examples, and consider using methods that return new arrays when you want to keep the original array intact.