DEV Community

Rajika Imal
Rajika Imal

Posted on

JavaScript quick tips: filter arrays

#javascript

Filter only numbers in an array,

const myArray = [1, "const", 2, 3]
myArray.filter(Number); // 1, 2, 3
Enter fullscreen mode Exit fullscreen mode

Remove all falsy values in an array

const myArray = [1, "const", 2, 3, undefined, null]
myArray.filter(Boolean); // 1, "const", 2, 3
Enter fullscreen mode Exit fullscreen mode

Top comments (0)

Read next

midhunkrishnan profile image

To access terminal profile of VS Code and add commands to be run initially

Midhun Krishnan R -

moibra profile image

Important Topics for Frontend Developers to Master in 2025

Mohamed Ibrahim -

mileswk profile image

Node.js as a normal script.js file

MilesWK -

arjun98k profile image

Project: Build a Weather App Using JavaScript and a Weather API

arjun -