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66 questions found

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React · Multiple Choice
Difficulty: Easy
What React unit describes a reusable part of the interface and can be implemented as a function returning renderable output?
Rendering inputsComponent model
Answer →
React · Multiple Choice
Difficulty: Easy
What read-only inputs does a parent pass to a React component?

Rendering inputsComponent model

React · Multiple Choice

Difficulty: Easy

What prop commonly carries the nested content written between a component's opening and closing tags?

Rendering inputsComponent model

React · Multiple Choice

Difficulty: Easy

What JavaScript syntax extension describes element trees using markup-like expressions?

Rendering inputsComponent model

React · Multiple Choice

Difficulty: Easy

What React construct groups several children without adding an extra DOM wrapper?

Rendering inputsComponent model

React · Multiple Choice

Difficulty: Medium

Which React Hook declares a local state value and a setter that schedules updates?

State updatesComponent state

React · Multiple Choice

Difficulty: Medium

What setter argument form computes the next state from the queued previous state?

State updatesComponent state

React · Multiple Choice

Difficulty: Medium

What useState argument form computes the initial value when the component initializes?

State updatesComponent state

React · Multiple Choice

Difficulty: Medium

What model explains why an event handler still sees the state values from the render that created it?

State updatesComponent state

React · Multiple Choice

Difficulty: Medium

What React behavior groups multiple state updates before committing the resulting interface change?

State updatesComponent state

React · Multiple Choice

Difficulty: Medium

Which Hook synchronizes a component with an external system after rendering?

Effects and synchronizationExternal systems

React · Multiple Choice

Difficulty: Medium

What function returned from an Effect releases its previous subscription or other external resource?

Effects and synchronizationExternal systems

React · Multiple Choice

Difficulty: Medium

What Effect argument lists the reactive values that determine when synchronization must be repeated?

Effects and synchronizationExternal systems

React · Multiple Choice

Difficulty: Hard

What bug occurs when a retained callback reads values captured from an outdated render?

Effects and synchronizationExternal systems

React · Multiple Choice

Difficulty: Hard

Which Hook reads from an external store using subscription and snapshot functions?

Effects and synchronizationExternal systems

React · Multiple Choice

Difficulty: Medium

Which Hook retains a mutable reference object across renders without making its changes trigger a render?

RefsImperative integration

React · Multiple Choice

Difficulty: Medium

What connects a React ref to an actual rendered browser element?

RefsImperative integration

React · Multiple Choice

Difficulty: Hard

Which Hook customizes the imperative handle exposed through a ref?

RefsImperative integration

React · Multiple Choice

Difficulty: Hard

What ref form receives a node through a function when React attaches it?

RefsImperative integration

React · Multiple Choice

Difficulty: Medium

Which property on an object ref holds the referenced node or mutable stored value?

RefsImperative integration

Showing 1–20 of 66 results

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