How to Disable Right Click on a Website Using JavaScript
Łukasz Holeczek
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Disabling right-click functionality on a web page is a common requirement for website owners who want to protect their content from unauthorized copying or saving of images. While it’s important to note that this method isn’t foolproof, it can serve as an effective deterrent against casual users attempting to steal content or access the context menu.
JavaScript Template Literals: Complete Developer Guide
Łukasz Holeczek
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Template literals revolutionized how developers work with strings in JavaScript. This modern feature provides a powerful alternative to traditional string concatenation, offering enhanced readability and functionality that every developer should master.
Maintaining Accessibility with React createPortal and aria-owns: A Complete Guide
Łukasz Holeczek
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When building modern React applications, developers frequently use createPortal to render components like dropdowns, modals, and tooltips outside their natural DOM hierarchy. While this solves styling and z-index issues, it creates a significant accessibility problem: screen readers lose the semantic connection between trigger elements and their associated content.
JavaScript Operator Precedence and Associativity: A Developer's Complete Guide
Łukasz Holeczek
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As JavaScript developers, we write expressions every day without thinking twice about how the JavaScript engine evaluates them. But understanding operator precedence and associativity is crucial for writing predictable, bug-free code and avoiding those head-scratching moments when your code doesn’t behave as expected.
Understanding Operator Precedence in JavaScript: Why Parentheses Matter with `??` and `?:`
Łukasz Holeczek
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When writing JavaScript or TypeScript, small syntax choices can cause big logic bugs—especially when dealing with operator precedence. One such case arises when using the nullish coalescing operator ?? together with the ternary conditional operator ?:.
What is CoreUI and Why Should You Use It for Your Next Admin Dashboard?
Łukasz Holeczek
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If you’re a developer, you’ve been there. A new project kicks off, and the most exciting parts are the complex back-end logic, the database architecture, or the core application features. Then comes the reality of building the user interface, specifically the admin dashboard. Suddenly, you’re spending countless hours reinventing the wheel: crafting buttons, aligning form fields, wrestling with responsive layouts, and trying to make a data table look decent on a phone.
How to Use Bootstrap Dropdown in Angular – CoreUI Integration Guide
Łukasz Holeczek
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Dropdown menus are a UI staple — from user avatars to action menus, they power some of the most important interactive patterns in web apps. But when working with Angular and Bootstrap, you don’t want to rely on data-bs-toggle="dropdown" or imperatively manage DOM events.
The Best Bootstrap Alternative for Developers in 2025
Łukasz Holeczek
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In the world of frontend development, Bootstrap has long been the go-to tool for creating responsive layouts and consistent user interfaces. But as web design challenges evolve and developers demand more flexibility, performance, and modularity, it’s no surprise that many are looking for a bootstrap alternative.
In this article, we’ll explore the best bootstrap alternatives, break down the pros and cons of each, and explain why CoreUI stands out as a complete, modern, and extensible solution — especially for developers working on enterprise-level projects.
How to Use Bootstrap Modal in Vue 3 – Clean Integration with CoreUI
Łukasz Holeczek
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Modals are a key part of modern UI — used for confirmations, forms, alerts, and more. If you’re building an Angular application with Bootstrap 5 styles, you might wonder how to implement modals without relying on jQuery or manual DOM manipulation.
How to Use Bootstrap Dropdown in Vue 3 – CoreUI Integration Guide
Łukasz Holeczek
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Bootstrap dropdowns are everywhere — in headers, sidebars, tables, toolbars. But if you’re using Vue 3, you probably don’t want to manage them via data-bs-toggle or vanilla JS events.
