Array.prototype.filter()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The filter() method of Array instances creates a shallow copy of a portion of a given array, filtered down to just the elements from the given array that pass the test implemented by the provided function.

Try it

const words = ["spray", "elite", "exuberant", "destruction", "present"];

const result = words.filter((word) => word.length > 6);

console.log(result);
// Expected output: Array ["exuberant", "destruction", "present"]

Syntax

filter(callbackFn)
filter(callbackFn, thisArg)

Parameters

callbackFn

A function to execute for each element in the array. It should return a truthy value to keep the element in the resulting array, and a falsy value otherwise. The function is called with the following arguments:

element: The current element being processed in the array.
index: The index of the current element being processed in the array.
array: The array filter() was called upon.

thisArg Optional

A value to use as this when executing callbackFn. See iterative methods.

Return value

A shallow copy of the given array containing just the elements that pass the test. If no elements pass the test, an empty array is returned.

Description

The filter() method is an