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React Day02

Authored by Gnanavel Durairaj

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Professional Development

Used 2+ times

React Day02
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you handle multiple form inputs in React?

Using separate state variables for each input

Using an object in state with input names as keys

Using session storage

Using Redux only

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you make an input field controlled in React?

By setting its value attribute to a state variable

By using defaultValue instead of value

By setting contentEditable=true

By wrapping it inside a <form>

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are props in React?

A way to manage component state

A method for updating the UI

A way to pass data between components

A way to create a component

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How are props passed in React?

Using this.props in functional components

By passing them as arguments to a function

Using global variables

By declaring them inside useState

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which syntax correctly passes a prop named name to a child component?

<Child name="John" />

<Child prop.name="John" />

<Child {name="John"} />

<Child>John</Child>

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Props are immutable in React. What does this mean?

Props cannot be changed inside a component

props are automatically updated when the parent state changes

Props are stored in local storage

Props need to be initialized with useState

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if a prop is missing in a component?

React will throw an error

The component will not render

The prop will be undefined

The default value will always be applied

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