How to Filter Elements of an Array based on a Condition in JavaScript - Step by Step Examples

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How to Filter Elements of an Array based on a Condition in JavaScript ?

Answer

To filter elements of an array based on a condition in JavaScript, you can use the filter method.

✐ Examples

1 Filter Even Numbers

In this example,

We have an array named numbers containing integers.
We use the filter method with a callback function to filter out even numbers.
We print the filtered array to demonstrate the filtering.

JavaScript Program

const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const evenNumbers = numbers.filter(num => num % 2 === 0);
console.log('Even Numbers:', evenNumbers);

Output

Even Numbers: [ 2, 4, 6, 8, 10 ]

2 Filter Strings by Length

In this example,

We have an array named words containing strings.
We use the filter method with a callback function to filter strings by their length.
We print the filtered array to demonstrate the filtering.

JavaScript Program

const words = ['apple', 'banana', 'cherry', 'date', 'fig'];
const filteredWords = words.filter(word => word.length > 5);
console.log('Filtered Words:', filteredWords);

Output

Filtered Words: [ 'banana', 'cherry' ]

Summary

In this tutorial, we learned How to Filter Elements of an Array based on a Condition in JavaScript language with well detailed examples.

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How to Filter Elements of an Array based on a Condition in JavaScript - Step by Step Examples

How to Filter Elements of an Array based on a Condition in JavaScript ?

Answer

✐ Examples

1 Filter Even Numbers

JavaScript Program

Output

2 Filter Strings by Length

JavaScript Program

Output

Summary

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