The useDeferredValue Hook
Learn how React useDeferredValue Hook keeps UIs responsive by delaying expensive re-renders during heavy updates.
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Modern apps often include live previews, such as design tools, dashboards, or data visualizers, where users tweak inputs and expect immediate feedback. However, sometimes rendering these updates can become resource-intensive.
For example, imagine an app that generates a large color palette. Each time you adjust a slider or input, the app recalculates and renders hundreds of color boxes. Moving the slider quickly can make the entire interface lag or freeze for a moment.
React’s useDeferredValue Hook helps prevent that. It allows you to delay heavy computations while keeping the main interface, such as input or slider updates, fast and smooth.