Write a JavaScript program to filter even numbers and double them
Description: From [1, 2, 3, 4, 5, 6] keep only the even numbers and double each one.
Hint:
- Use
filter()first, thenmap().
JavaScript filter and map program
const numbers = [1, 2, 3, 4, 5, 6];
const result = numbers
.filter(n => n % 2 === 0)
.map(n => n * 2);
console.log(result);
Output:
Tutorials Class - Output Window
[ 4, 8, 12 ]
How it works
filter()keeps 2, 4 and 6.map()doubles them to 4, 8 and 12.
Read Array Methods.
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