Testing components from a user’s perspective ensures your application is accessible and behaves as users expect. With over 12 years of React development experience since 2014 and as the creator of CoreUI, I’ve adopted React Testing Library as the standard for component testing. React Testing Library (RTL) encourages testing components the way users interact with them, focusing on accessibility and user behavior. This approach creates tests that are more maintainable and closely aligned with real-world usage.

Keyboard event handling is essential for accessibility, keyboard shortcuts, and improving user experience in web applications. As the creator of CoreUI with over 12 years of Vue.js experience since 2014, I’ve implemented keyboard navigation in countless enterprise applications. Vue provides event listeners with key modifiers to easily capture specific key combinations and keyboard interactions. This approach enables keyboard shortcuts, form navigation, and accessible interfaces without complex event handling code.

Creating tooltips enhances user experience by providing contextual information on hover or focus without cluttering the interface. As the creator of CoreUI with over 25 years of development experience, I’ve implemented tooltip systems across numerous production applications. The most effective approach is using React state with mouse and focus event handlers to control tooltip visibility and positioning. This provides accessible, responsive tooltips that work with both mouse and keyboard navigation.

Creating accessible dropdown menus is essential for navigation and user interactions in React applications, requiring proper state management and keyboard support. With over 25 years of experience in software development and as the creator of CoreUI, I’ve built countless dropdown components for enterprise applications. The most effective approach is using state to control visibility with click outside detection and keyboard event handling. This ensures accessible, user-friendly dropdown menus that work across all devices and input methods.

Creating accessible modal dialogs is essential for user interactions like confirmations, forms, and content overlays in React applications. As the creator of CoreUI with over 25 years of development experience, I’ve built countless modal components for enterprise applications. The most effective approach is using React portals to render the modal outside the component tree with proper focus management. This ensures the modal appears above other content and maintains accessibility standards.