React Logical AND Operators MCQ && Operator Practice Questions

Direction: Choose the correct option

What does the && operator do in JSX?

A. Returns the first falsy value or the last truthy value

B. Always returns a boolean

C. Renders nothing if left is falsy

D. Throws an error if left is falsy

Direction: Choose the correct option

What will

{0 && Hi}

render?

A. <div><span>Hi</span></div>

B. <div>false</div>

C. <div>0</div>

D. <div></div>

Direction: Choose the correct option

Why might you see '0' rendered unexpectedly when using &&?

A. Because 0 is falsy but React renders numeric 0

B. Because 0 is a valid React element

C. Because && returns 0

D. Because of a bug

Direction: Choose the correct option

What is the result of {true &&

Hello

A. Nothing

B. FALSE

C. <p>Hello</p>

D. TRUE

Direction: Choose the correct option

Which is a safe way to conditionally render a component using &&?

A. {condition && 0 && <Component />}

B. {condition && <Component />}

C. Both A and C

D. {condition ? <Component /> : null}

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