Page 44 - Maxim Mironjuk

Good focus management separates web development from accessible web development. :focus-visible shows the focus ring only during keyboard use, :focus-within enables container-level reactions, and together with correct outline styles that follow WCAG they form the foundation for keyboard navigation without compromising visual design.

With the aria-* modifiers in Tailwind CSS, ARIA attributes become the single source of truth for accessibility states, visually and semantically at once. No separate class management, no JavaScript for visual states, no drifting apart of ARIA state and CSS class.

Symfony is the most robust PHP framework for complex backend logic. React is the most powerful UI framework for dynamic frontends. API Platform connects the two through automatically generated REST and GraphQL APIs, complete with validation, serialization and OpenAPI documentation out of the box. This article shows how to bring the two worlds together in a production ready way.

The checkout flow in Magento GraphQL is complex: seven mutations from cart creation to order placement, sessionless state management via the cart ID, and a series of typical error sources that are hard to pinpoint without good debugging. This article shows how the flow works, where its limits lie, and how to systematically find errors.

Growing memory usage, sluggish interactions, and browser tabs that crash after hours: JavaScript applications with long lived pages frequently suffer from memory leaks that only become noticeable over time. This article covers the most common leak sources, practical use of heap snapshots in Chrome DevTools, and a step by step debugging workflow that reliably locates and fixes leaks.

Anyone embedding JavaScript or CSS from an external CDN is trusting that the provider will never be compromised. Subresource Integrity replaces that blind trust with a cryptographic checksum the browser verifies against the actual file content before execution, making silent supply chain attacks technically visible.

A comparison table sounds like a simple HTML table with a few columns at first. But once several products with differing numbers of attributes need to sit side by side, a differences-only view is required, and the table still has to work on a smartphone, it turns into a genuinely small application with its own state. Alpine.js is a good fit for exactly this task because row and column logic can be expressed entirely declaratively in the markup, without needing dedicated build tooling or a framework like React.

Anyone who has registered event listeners in Symfony via services.yaml with tags and method names knows the pain of maintaining several files for a single class. The PHP attribute #[AsEventListener] eliminates this YAML configuration entirely, the listener is declared directly on the class or method, type-safe and immediately readable.

A deployment script without checklists deploys even when the build is broken. Without guards, a second deployment runs in parallel with the first. Without a rollback mechanism, a failed deployment turns into a manual emergency. Professional shell scripts for deployments solve all three problems, using simple, maintainable Bash patterns.

High system load is not automatically a sign of a slow disk. This guide shows how iostat with interval sampling separates real trends from short bursts, how iotop identifies the specific process behind heavy I/O usage, and how metrics like %util and await reliably reveal whether you are looking at a disk problem or an application problem.