Javascript Articles

Vytenis Alaburda

Updated on September 22, 2025

React is a JavaScript library for building interactive user interfaces, while Next.js is a React framework that adds features like server-side rendering, routing and static site generation for optimized web development.

Antonello Zanini

Updated on September 22, 2025

ERR_OSSL_EVP_UNSUPPORTED is an OpenSSL error indicating that the requested operation or algorithm is not supported by the current version or configuration of OpenSSL. Here's how to get rid of the ERR_OSSL_EVP_UNSUPPORTED error in Node.js.

Nicolai Berg Andersen

Updated on August 20, 2025

We use iFrames (inline frames) to embed HTML documents within websites. Our expert shows you how to use iFrames and provides some practical examples.

Richmond Alake

Updated on August 12, 2025

Bubble sort time complexity describes how the bubble sort algorithm’s runtime scales with input size, being O(n²) in average and worst cases and O(n) in the best case when optimized.

Jayanth Somineni

Updated on August 04, 2025

Learn different ways of including images in React.js applications. Display great imagery, no matter your code’s style.

Dr. Derek Austin

Updated on August 04, 2025

Null represents an intentional absence of a value, indicating a variable has been declared but has yet to be assigned a value. These are some of the most common methods for checking for null and values loosely equal to null in JavaScript.

Trung Thanh Le

Updated on July 29, 2025

There are several ways to get the last element of a JavaScript array, including length property and square bracket notation, slice() method and pop() method. Here are nine methods to try.

Dr. Derek Austin

Updated on July 17, 2025

The question mark operator is used in JavaScript as an alternative to an if statement, especially where a value is assigned based on a conditional.

Ezekiel Oladejo

Updated on July 08, 2025

The ”_dirname is not defined in ES module scope” error occurs when you use _dirname in an ES module. Here’s how to fix it. 

Kacper Michalik

Updated on June 23, 2025

Programming projects can help developers expand their skills and deepen their tech stack knowledge. Here are a variety of project ideas from beginner to advanced to sharpen your skills.