React - Quiz

useEffect and useState are called

• React Objects

• React Arrays

• React Hooks

• None of the above

const [count, setCount] = useState()
What is the value of count?

• 0

• undefined

• null

• Syntax error

How many arguments does useEffect has?

• 1

• 2

• 3

• No arguments

The second argument of the useEffect is called

• Dependency Array

• Default Array

• Dependency Object

• There is no second argument

const [count, setCount] = useState()

What will be the value of count?

• undefined

• 0

• null

• 
  Syntax error

<></> will be rendered on DOM

• True

• False

• Both True and False

• May be

Which array method is used to render lists in react?

• forEach()

• loop()

• map()

• list()

useEffect(() => {console.log('10')}, [])
How many times will 10 be printed on the console?

• 1 time

• Only when state changes

• 10 times

• 0 times

const { a, b } = { name: "John", age: 40 }
console.log(a)

• John

• 40

• undefined

• Syntax Error

const { height = 6.5 } = { name: "John", age: 40 }
console.log(height)

• undefined

• 6.5

• null

• Syntax error