Difference between Map and forEach | JavaScript Tutorials in Hindi | Interview Question #19

In JavaScript, both Map and forEach are methods that are used to loop over an array or an iterable object. However, there are some key differences between the two.

forEach is a method that executes a provided function once for each element in an array in order. It does not return anything, and is often used when we want to perform some operation on each element of an array without modifying the array itself.

Map, on the other hand, creates a new array with the results of calling a provided function on every element in the calling array. In other words, it applies a function to each element of an array and returns a new array with the transformed elements.

So, while forEach simply executes a function for each element in an array, Map transforms each element using a function and returns a new array with the transformed elements.