How to Filter an Array in JavaScript ?

Last Updated : 08 Nov, 2024

The array.filter() method is used to filter array in JavaScript. The filter() method iterates and check every element for the given condition and returns a new array with the filtered output.

Syntax

const filteredArray = array.filter( callbackFunction ( element [, index [, array]])[, thisArg]);

Note: It is an in-built JavaScript method to filter an array.

JavaScript

// Given array
const a = [ 1, 2, 3, 4, 5, 6];

// Filter the even numbers
const a1 = a.filter( number => number % 2 === 0);

// Display output
console.log("Filtered Array:", a1);