How do forEach and nested loops work in JavaScript?

Can you explain how forEach works in JavaScript?

Sure! The forEach method executes a provided function once for each array element. It's a great way to iterate over arrays.

What about nested loops? How do they work?

Nested loops are loops inside another loop. They allow you to iterate over multi-dimensional arrays or perform complex iterations.

Can you give me an example of using forEach with a nested loop?

Absolutely! Here's an example:

const matrix = [[1, 2], [3, 4]];
matrix.forEach(row => {
  row.forEach(num => {
    console.log(num);
  });
});

This will log each number in the 2D array.

What are some common use cases for nested loops?

Common use cases include processing multi-dimensional arrays, generating combinations, and working with matrices.