Javascript · CoreUI

How to Clone an Object in JavaScript

Monday, February 24, 2025

Cloning or duplicating objects in JavaScript is a common task for developers who need to avoid unintended side effects when sharing data. If you simply use the assignment operator to reference one object from another, you risk mutating the same object instead of creating a new object. By learning how to copy an object correctly, you can keep your code clean, ensure data integrity, and handle everything from simple object literals to more advanced scenarios such as nested objects. In this article, you’ll discover practical methods for copy object javascript, including both shallow copy and deep copy techniques, and see how to deal with edge cases like circular references or an undefined value.

How to Fix “Sass @import Rules Are Deprecated and Will Be Removed in Dart Sass 3.0.0.”

Łukasz Holeczek

Monday, February 17, 2025

#how-to #javascript

Fix Sass @import Rules Are Deprecated and Will Be Removed in Dart Sass 3.0.0.

For years, the @import rule has been the go-to approach for handling modular Sass code. However, the Sass team announced the deprecation of @import in favor of the newer module system. If your build process or existing codebase shows a warning—“Sass @import rules are deprecated and will be removed in Dart Sass 3.0.0.”—it’s time to switch to the recommended @use or @forward directives. In this post, you’ll learn why the Sass team introduced this change, the best practices for migrating your code, and how to ensure your workflow remains smooth and maintainable.

How to Remove Elements from a JavaScript Array

Łukasz Holeczek

Thursday, February 13, 2025

#how-to #javascript

remove element from an array in javascript

Removing elements from an array in JavaScript is a fundamental skill every developer should master. Whether you need to remove the first element, remove the last element, or filter out unwanted elements based on a specified value, understanding multiple techniques to remove array elements ensures your code remains clean and efficient. In this post, we will explore a few methods to remove element from array in javascript, explain how they work on the original array or when they create a new array, and show you the potential pitfalls.

What is the Difference Between Null and Undefined in JavaScript

Łukasz Holeczek

Sunday, February 9, 2025

#how-to #javascript

If you’ve ever wondered about the differences in JavaScript null vs undefined, read on. In the JavaScript programming language, the difference between null and undefined can seem confusing to many developers. Although both represent the absence of a meaningful value, they are distinct types in JavaScript with their own inner workings. Learning how to handle null/undefined scenarios is crucial because these two values frequently appear in everyday coding tasks. By understanding undefined in JavaScript and null in real-world cases, you can avoid unexpected bugs, properly manage data types, and maintain cleaner code. This article will walk you through the subtle difference between null and undefined, and offer best practices for handling them.

How to Manage Date and Time in Specific Timezones Using JavaScript

Łukasz Holeczek

Wednesday, January 22, 2025

#how-to #javascript

Handling date and time across different timezones is a common yet intricate task for JavaScript developers. Whether you’re working on global applications or time-sensitive services, precise date and time manipulation in specific timezones is essential. JavaScript provides native methods and modern APIs to simplify this task, but challenges like daylight saving time, timezone offsets, and formatting can still cause issues.

How to sort an array of objects by string property value in JavaScript

Łukasz Holeczek

Saturday, January 18, 2025

#how-to #javascript

Sorting an array of objects by a specific property is a common requirement in JavaScript, especially when dealing with complex data structures in real-world applications. In this article, we’ll explore how to sort an array of objects by string values using JavaScript’s sort method. By the end of this guide, you’ll understand how to implement a custom comparison function and sort arrays efficiently.

How to Conditionally Add a Property to an Object in JavaScript

Łukasz Holeczek

Monday, January 13, 2025

#how-to #javascript

how to conditionally add a property to object

In JavaScript, dynamically adding properties to objects based on conditions is a common task. Whether you’re working with APIs, creating dynamic configurations, or simply managing data, knowing how to conditionally add properties can streamline your code. In this article, we’ll explore different methods to achieve this efficiently, ensuring you write clean, idiomatic code.

What is globalThis in JavaScript?

Łukasz Holeczek

Wednesday, January 8, 2025

#what-is #javascript #node.js

When working with JavaScript, the global object is a critical concept that provides access to the environment’s core functionalities. However, inconsistencies across different JavaScript environments, such as browsers, Node.js, and web workers, have long made accessing the global object challenging. To address this, the globalThis object was introduced as a unified mechanism to reliably access the global object in a consistent manner, regardless of the environment. This article explores what globalThis is, why it’s essential, and how to use it effectively.

Understanding the Difference Between NPX and NPM

Łukasz Holeczek

Thursday, January 2, 2025

#what-is #javascript #node.js

In the ever-evolving landscape of JavaScript development, managing packages efficiently is crucial. Whether you’re a seasoned developer or just starting, understanding the tools at your disposal can significantly impact your workflow. Two such essential tools are npm and npx. While both are integral to the Node Package Manager ecosystem, they serve distinct purposes. This article delves into the difference between npm and npx, elucidating their roles, best practices, and practical applications to enhance your development experience.

Understanding the difference between `for...in` and `for...of` statements in JavaScript

Łukasz Holeczek

Friday, December 6, 2024

#what-is #javascript

As JavaScript continues to evolve, understanding the nuances of its looping mechanisms becomes essential for developers aiming to write efficient and bug-free code. Two commonly used looping statements, for...in and for...of, often lead to confusion due to their overlapping use cases. Grasping the difference between these loops is crucial for iterating over objects and iterable objects effectively, ensuring optimal performance and maintainability in your codebase.