Map, Filter, or For Loop: Which to Use?

What's the difference between using map, filter, and for loop in JavaScript?

Great question! In JavaScript, map is used to transform an array, filter is for selecting elements based on a condition, and for loop is a general-purpose iteration method.

Can you give me an example of when to use each?

Sure! Use map when you want to create a new array by applying a function to each element. Use filter to create a new array with only the elements that pass a test. Use a for loop when you need more control over the iteration process.

Is one method more efficient than the others?

Efficiency can depend on the context. Generally, map and filter are more readable and concise, but for loop can be more efficient for complex operations or when you need to break out of the loop early.

What about performance in large datasets?

For large datasets, for loop might be faster since it avoids the overhead of creating intermediate arrays. However, map and filter offer better readability, which can be beneficial for maintenance.