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Small, practical examples. Search by task or narrow things down below.

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ReactPerformance & rendering

Mark a nonurgent state update as a transition

Mark a nonurgent state update as a transition with a small React component and explicit browser behavior.

React✓ Tested
ReactEffects & lifecycle

Measure an element after layout

Measure an element after layout with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize a component with stable props

Memoize a component with stable props with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize a derived collection

Memoize a derived collection with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize a sorted copy of state

Memoize a sorted copy of state with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize an object passed to a provider

Memoize an object passed to a provider with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Mount expensive content only when requested

Mount expensive content only when requested with a small React component and explicit browser behavior.

React✓ Tested
CSSPositioning & stacking

Move a box visually without changing its layout slot

CSS: Transforms change the painted geometry while leaving surrounding normal-flow layout unchanged.

CSS✓ Tested
ReactGetting Started

Nest a reusable component

Nest a reusable component with a small React component and explicit browser behavior.

React✓ Tested
ReactComponents & props

Notify a parent with a callback prop

Notify a parent with a callback prop with a small React component and explicit browser behavior.

React✓ Tested
ReactRefs & DOM interaction

Observe when a DOM node is attached

Observe when a DOM node is attached with a small React component and explicit browser behavior.

React✓ Tested
ReactRefs & DOM interaction

Open and close a native dialog

Open and close a native dialog with a small React component and explicit browser behavior.

React✓ Tested