The map function create a new array from an existing array.
Example Example
First let’s check the example of map function
Code Snippet Code Snippet
Suppose we have a below array.
const numbers = [1, 2, 3];
// [1, 2, 3]
Manipulate values Manipulate values
Manipulate our existing array values by adding +1 in each value as:
const newNumbers = numbers.map( number => number + 1 );
Here, we have used map method in which we perform the addition of +1 in each array value.
And a new array created and assigned to variable newNumbers.
The statement number => number + 1
is a arrow function. Read more about arrow functions.
Output Output
Final we see the output as below:
console.log( newNumbers );
// [2, 3, 4]