JavaScript Code

Filter even numbers in array in JavaScript

In this tutorial, you are given an array. Write a JavaScript program to filter even numbers in the array.

Solution

To filter even numbers in the given array using JavaScript, we can use Array.filter() method. Call filter() method on the given array, and pass a function that returns true for even number, or false otherwise. filter() method returns a new array with the even numbers from the contents of original array.

Program

1. Filter even numbers in the nums array.

function isEven(item) {
    if (item % 2 == 0) {
        return true;
    } else {
        return false;
    }
}

nums = [4 , 5, 2, 0, 1, 7, 19, 82];
evenNums = nums.filter(isEven);
console.log(evenNums);