React State and Props

React State and Props

University

7 Qs

quiz-placeholder

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React State and Props

React State and Props

Assessment

Quiz

Instructional Technology

University

Practice Problem

Hard

Created by

Kelvin Kipchumba

Used 1+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main purpose of props in React?

To store and manage data within a component

To pass data from one component to another

To modify the state of a component

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following would correctly render a list of items in React using the map() method?

{

items.forEach((item) => <li>{item}</li>

)

}

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if you don’t use a unique key for list items in React?

  • The list will not render at all.

  • React will throw an error and stop rendering.

  • React may have trouble updating the list efficiently.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct syntax of useState in react?

const [state, setState] = useState(initialValue);

const state = useState(initialValue);

const [state setState] = useState(initialValue);

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the array

const students = [{ name: "Alice" }, { name: "Bob" }]

which is the correct way to access the name property of the first item?

students[0].name

students(0).name

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following would be a valid way to pass props to a child component in React?

<ChildComponent props="Hello" />

<ChildComponent message="Hello" />

ChildComponent {message}="Hello" />

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of state in a React component?

  • It contains the component’s initial HTML structure.

  • It passes data to child components.

  • It stores the data that can change over time and causes re-rendering.

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