React Questions

To directly manipulate the DOM

To break down the UI into independent, reusable pieces

To handle user interactions

To manage application state

Using the browser's default form submission mechanism.

Submitting the form using AJAX without any event handling.

Preventing default behavior and handling submission logic within an event handler.

Using a third-party library to handle all form-related tasks.

To give each element a unique identifier for styling purposes.

To define the order in which elements should be displayed.

To associate event handlers with specific elements.

To help React efficiently update and re-render lists.

function Welcome(props) { ... }

let Welcome = (props) => { ... }

class Welcome extends React.Component { ... }

const Welcome = () => { ... };

<span>This is incorrect {</span>

To send data to the server for validation.

To style form elements based on user input.

To ensure data integrity and prevent invalid submissions.

To automatically submit the form when all fields are filled.

To handle user input events

To manage and update the state of a functional component

To fetch data from an API

To style components dynamically

Functional components are written in JavaScript, while class components use TypeScript

Functional components are used for complex UI logic, while class components are for simple elements

Functional components cannot receive props, while class components can

Functional components are stateless, while class components can have state

{ expression }

{{ expression }}

expression

( expression )

The default prop value is used

An error is thrown

The prop will be undefined

The component will not render