Author -  Sai gowtham

How to remove empty elements from an array in JavaScript

In this tutorial, we are going to learn about how to remove empty elements (like strings, null, undefined, etc) from an array in JavaScript.

Consider we have an array like this.

const arr  = ["cat", "rabbit", "", "", 34, 354, null, 3, undefined];

Now we need to remove the empty strings, null and undefined values from the above array.

Using filter() method

In JavaScript, we have the filter() method by using that we can remove empty elements from an array.

The filter() method accepts the callback function as an argument and calls the callback function on each element present in the array.

If the callback function return value is true it keeps the element in array, if the return value is false it removes the element from an array.

Example:

const arr  = ["cat", "rabbit", "", "", 34, 354, null, 3, undefined];

const remove = arr.filter(el=>el)

console.log(remove);

Output:

["cat", "rabbit", 34, 354, 3]

Css Tutorials & Demos

How rotate an image continuously in CSS

In this demo, we are going to learn about how to rotate an image continuously using the css animations.

How to create a Instagram login Page

In this demo, i will show you how to create a instagram login page using html and css.

How to create a pulse animation in CSS

In this demo, i will show you how to create a pulse animation using css.

Creating a snowfall animation using css and JavaScript

In this demo, i will show you how to create a snow fall animation using css and JavaScript.

Top Udemy Courses

JavaScript - The Complete Guide 2023 (Beginner + Advanced)
JavaScript - The Complete Guide 2023 (Beginner + Advanced)
116,648 students enrolled
52 hours of video content
$14.99 FROM UDEMY
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
631,582 students enrolled
49 hours of video content
$24.99 FROM UDEMY
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
203,937 students enrolled
31.5 hours of video content
$14.99 FROM UDEMY