How do I iterate over an array in JavaScript?

How do I iterate over an array in JavaScript?

You can use several methods to iterate over an array in JavaScript, such as for loops, forEach, map, and more.

Can you explain the forEach method?

Sure! The forEach method executes a provided function once for each array element. Here's an example: array.forEach(element => { console.log(element); });.

What about using the map method?

The map method creates a new array populated with the results of calling a provided function on every element in the calling array. For example: const newArray = array.map(element => element * 2);.

Are there any performance differences between these methods?

Yes, performance can vary. For large arrays, traditional for loops may be faster than forEach or map, but for readability, forEach and map are often preferred.