What are the different methods for iterating over arrays and their performance?

What are the different methods for iterating over arrays in JavaScript?

In JavaScript, common methods for iterating over arrays include for loops, forEach, map, filter, and reduce.

Can you explain the performance differences between these methods?

Sure! Generally, traditional for loops are the fastest, while methods like forEach and map are slower due to function calls.

Are there any scenarios where one method is preferred over the others?

Yes, forEach is great for side effects, while map is ideal for transforming data. Use reduce for accumulating values.

What about performance in large datasets?

For large datasets, traditional for loops often outperform others, but it depends on the specific use case and operations.