INP for React Apps: Profiling and Eliminating Long Tasks
The article discusses the importance of Interaction to Next Paint (INP) as a key metric for measuring UI responsiveness in React applications. It outlines common causes of poor INP, such as long tasks and excessive re-renders, and provides a step-by-step guide to diagnose and improve performance. By optimizing event handlers and reducing unnecessary JavaScript, developers can enhance user experience significantly.
- ▪INP measures the time from user interaction to the next paint, with targets set for good, needs improvement, and poor performance.
- ▪Common issues affecting INP in React apps include long tasks, render storms, and heavy work inside event handlers.
- ▪To improve INP, developers should confirm the problem, identify long tasks, optimize event handlers, and minimize unnecessary re-renders.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 2638501) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Nayan Kyada Posted on May 20 • Originally published at nayankyada.com INP for React Apps: Profiling and Eliminating Long Tasks #performance #react #corewebvitals INP (Interaction to Next Paint) measures how quickly your UI responds after a user interacts. If a click, tap, or keypress is followed by a noticeable delay, you’ll feel it — and so will your users.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
Discussion
0 commentsMore from DEV.to (Top)
