Sort

The sort() method is a built-in function for arrays that helps you organize the elements in a specific order. By default, it sorts the elements alphabetically for strings or numerically for numbers. However, you can also customize the sorting behavior using a callback function to define your own sorting criteria.

Default Sorting: Imagine you have a list of movie titles (strings) and you want to sort them alphabetically (default sorting):

const movieTitles = ["The Shawshank Redemption", "The Godfather", "The Dark Knight", "Pulp Fiction"];

movieTitles.sort(); // Sorts in place

console.log(movieTitles); // Output: ["The Dark Knight", "The Godfather", "Pulp Fiction", "The Shawshank Redemption"]

• In above example, we call sort() on movieTitles.
• By default, it sorts the elements alphabetically based on their Unicode character codes.
• console.log() displays the movieTitles array, which is now sorted alphabetically.

Custom Sorting for Numbers: Let's say you have an array of product ratings (numbers) and you want to sort them from highest to lowest:

const ratings = [4.5, 3.8, 5.0, 4.2];

ratings.sort((a, b) => b - a); // Custom comparison function for descending order

console.log(ratings); // Output: [5.0, 4.5, 4.2, 3.8]

• In above example, we call sort() on ratings.
• We provide a custom comparison function ((a, b) => b - a) that subtracts the second element (b) from the first element (a).
• If the result is positive (b is greater than a), elements are swapped (descending order).