What is the concept of Array.map?

Question

I am having problems understanding the concept of Array.map. I did go to Mozilla and Tutorials Point, but they provided very limited info regarding this.

<

Answer 1

IF you have an array of elements and you have to perform the same operation on the each element of the array that time you can use the javascript map function for array it helps to iterate throw the array then we can perform the operation of each element and return it.

let NumberArray = [1,2,3,4,5,6,7,8];

let UpdatedArray = NumberArray.map( (Num , index )=>{ 
                return Num*10;
            })

console.log(UpdatedArray);

//UpdatedArray ==> [10, 20, 30, 40, 50, 60, 70, 80]