Differences : Map and Foreach Javascript

Differences : Map and Foreach Javascript.

Map :

1. map does not modify the original array. 

2. map returns a new array with the results of the callback function.    

const numbers = [1, 2, 3, 4, 5];

const squaredNumbers = numbers.map(number => number * number);

console.log(squaredNumbers); // Output: [1, 4, 9, 16, 25]

forEach :

1. forEach does not return a new array; it modifies or processes elements in place. 

2. forEach is used when you do not need to create a new array and only need to perform an action on each element. 

3. forEach does not support returning a value.

const numbers = [1, 2, 3, 4, 5];

numbers.forEach(number => console.log(number * 2));

// Output: 2, 4, 6, 8, 10