What are the performance differences between map and filter in JavaScript?

What are the performance differences between map and filter in JavaScript?

The main difference lies in their purpose: map transforms each element, while filter selects elements based on a condition.

Can you explain how each method works with an example?

Sure! For map, if you have an array of numbers and want to double them, you'd use map like this: array.map(num => num * 2). For filter, if you want to get only even numbers, you'd use: array.filter(num => num % 2 === 0).

Which one is generally faster?

It depends on the context and the size of the array. Map can be faster for transformations, while filter can be slower if the condition is complex.

Are there any scenarios where one is preferred over the other?

Yes, use map when you need to transform data and filter when you need to reduce the dataset based on specific criteria.