JSX -REACT-UID

What does JSX stand for?

• JavaScript Extra

• JavaScript eXtension

• JavaScript XML

• JavaScript eXample

How do you embed JavaScript expressions in JSX?

• Wrap expressions in parentheses () to embed them in JSX.

• Use curly braces {} to embed JavaScript expressions in JSX.

• Use square brackets [] to embed JavaScript expressions in JSX.

• Use angle brackets <> to embed JavaScript expressions in JSX.

What is the purpose of the 'className' attribute in JSX?

• The 'className' attribute in JSX is used to define the CSS class for an element.

• The 'className' attribute is used to set the element's visibility.

• The 'className' attribute is used to define the ID of an element.

• The 'className' attribute is for inline styles in JSX.

Can you return multiple elements in a single JSX expression?

• Yes, by using a parent element or React Fragment.

• You can return multiple elements without any wrapper.

• No, you can only return one element in JSX.

• Yes, but only if they are of the same type.

How do you handle events in JSX?

• Use camelCase for event names and pass a function as the event handler.

• Use hyphenated names for events and pass an object as the handler.

• Use lowercase for event names and pass a string as the event handler.

• Use uppercase for event names and pass a class as the event handler.

What is the difference between a functional component and a class component in React?

• Functional components cannot accept props.

• Functional components are stateless and use hooks, while class components are stateful and have lifecycle methods.

• Class components are always faster than functional components.

• Functional components can only be used with Redux.

Can you use JSX without React?

• JSX requires a React environment to function.

• JSX is a React-specific syntax.

• Yes, you can use JSX without React.

• JSX can only be used with React.

What is the output of the following JSX:

Hello, World!

?

• Hello, Everyone!

• Hello, World!

• Hello, World!

• Hello, World!

How do you conditionally render elements in JSX?

• Using only CSS for styling

• You can conditionally render elements in JSX using the ternary operator, logical && operator, or if statements.

• Using HTML comments to hide elements

• Rendering elements based on user input

What is the significance of using parentheses in multi-line JSX?

• Parentheses are used to define variables in JSX.

• Parentheses are only necessary for single-line JSX.

• Parentheses improve readability and prevent syntax errors in multi-line JSX.

• Parentheses are required for all JSX elements regardless of line breaks.