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React19

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Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Dec 21, 2024 · Frontend Development

Understanding the New “use” Hook in React 19 and Its Impact on UI Development

This article introduces React 19’s new use hook that reduces reliance on useEffect, explains how to work with resolved promises, demonstrates conditional usage and integration with Suspense through detailed code examples, and discusses practical considerations when using the hook in modern frontend projects.

JavaScriptPromisesReact19
0 likes · 9 min read
Understanding the New “use” Hook in React 19 and Its Impact on UI Development
IT Services Circle
IT Services Circle
Dec 7, 2024 · Frontend Development

React 19 New Features and Updates Overview

React 19 introduces a suite of new features including Actions with useActionState, optimistic UI with useOptimistic, the use hook for resource reading, enhanced form handling via useFormStatus, server components, static rendering APIs, improved hydration, ref-as-prop, metadata handling, stylesheet and async script support, and advanced resource preloading.

HooksPerformanceReact19
0 likes · 20 min read
React 19 New Features and Updates Overview
IT Services Circle
IT Services Circle
Jun 26, 2024 · Frontend Development

React 19’s Change to Suspense Parallel Rendering and Its Performance Impact

The article explains how React 19 silently altered Suspense behavior by disabling parallel rendering of sibling components, turning data fetching into a waterfall pattern, which caused significant performance regressions for many sites, sparked community backlash, and was eventually rolled back after extensive discussion.

DataFetchingPerformanceReact19
0 likes · 6 min read
React 19’s Change to Suspense Parallel Rendering and Its Performance Impact