Tag: Array flatMap()

Program to use JavaScript Array flatMap() method

let a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let b = a.flatMap((a) => a * 3);
console.log(b);

Output

[
    3,  6,  9, 12, 15,
   18, 21, 24, 27, 30
]

Steps Description

1. Declare two variables a and b
2. Initialize two variables a and b with value of string a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] and b = a.flatMap((a) => a * 3)
3. Array flatMap() method map all array elements and creates a new array.
4. The value of b variable is displayed with the help of console.log inbuilt function