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GeezerVison is showing builtin.com — Javascript Articles | Built In

Javascript Articles

Sorted By: Most Recent
Ankit Malik Ankit Malik
Updated on April 21, 2026

PascalCase vs. camelCase: Naming Conventions for Clean Code

PascalCase and camelCase are two different casing styles used in programming for naming variables, class and type names. Learn the differences and other casing styles. 

Expert Contributors
Python
Software Engineering Perspectives
Image: Shutterstock / Built In
Eli Wilson Eli Wilson
Updated on December 03, 2025

What Is Inversion of Control (IoC)? (Definition, Benefits)

Inversion of control (IoC) is a core principle where frameworks control code execution. Our expert provides a thorough overview.

Expert Contributors
Python Data Structures
Software Engineering
Image: Shutterstock / Built In
Lynn Kwong Lynn Kwong
Updated on September 29, 2025

How to Use JSON Schema to Validate JSON Documents in Python

In Python, we can use the JSON Schema library to validate a JSON document against a schema.

Expert Contributors
Python for Data Science
Data + Analytics
Image: Shutterstock / Built In
Vytenis Alaburda Vytenis Alaburda
Updated on September 22, 2025

Why Is React a Library and Next.js a Framework?

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.

Expert Contributors
Front-End
Software Engineering Perspectives
Image: Shutterstock / Built In
Antonello Zanini Antonello Zanini
Updated on September 22, 2025

How to Fix the ‘ERR_OSSL_EVP_UNSUPPORTED’ Error in Node.js

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.

Expert Contributors
React
Node.js
Image: Shutterstock / Built In
Nicolai Berg Andersen Nicolai Berg Andersen
Updated on August 20, 2025

What Is an iFrame?

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

Expert Contributors
HTML
Software Engineering Perspectives
Image: Shutterstock / Built In
Richmond Alake Richmond Alake
Updated on August 12, 2025

Bubble Sort Time Complexity and Algorithm Explained

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.

Expert Contributors
Software Engineering Perspectives
Javascript
Image: Shutterstock / Built In
Jayanth Somineni Jayanth Somineni
Updated on August 04, 2025

Different Ways to Display Images in React.js Apps

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

Expert Contributors
Software Engineering Perspectives
Javascript
Image: Shutterstock / Built In
Dr. Derek Austin Dr. Derek Austin
Updated on August 04, 2025

How to Check for Null in JavaScript

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.

Expert Contributors
Software Engineering Perspectives
Software Engineering
Images: Shutterstock / Built In
Trung Thanh Le Trung Thanh Le
Updated on July 29, 2025

How to Get the Last Element of an Array in JavaScript

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.

Expert Contributors
Software Engineering
Software Engineering Perspectives
Image: Shutterstock / Built In
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