Which of the following is a class component? A class Welcome extends React.Component { render() { return <h1>Hello, {this.props.name} </h1>; } } const element = <Welcome name="World!" />; ReactDOM.render( element, document.getElementById('root')); B function Welcome(props) { return <h1>Hello, [props.name}</h1>; } const element = <Welcome name="World!" />; document.getElementById('root')); ReactDOM.render( element, C class Welcome extends React.Component { render() { function random(){ return <h1>Hello, {this.props.name}</h1>; } }} const element = <Welcome name="World!" />; ReactDOM.render( element, document.getElementById('root'));
Question
Which of the following is a class component? A class Welcome extends React.Component { render() { return <h1>Hello, {this.props.name} </h1>; } } const element = <Welcome name="World!" />; ReactDOM.render( element, document.getElementById('root')); B function Welcome(props) { return <h1>Hello, [props.name}</h1>; } const element = <Welcome name="World!" />; document.getElementById('root')); ReactDOM.render( element, C class Welcome extends React.Component { render() { function random(){ return <h1>Hello, {this.props.name}</h1>; } }} const element = <Welcome name="World!" />; ReactDOM.render( element, document.getElementById('root'));
Solution
The class component in the given options is A. In option A, the Welcome component is defined as a class that extends React.Component, which is the standard way of creating a class component in React. The render method is used to specify what the UI will look like. The other options B and C are not class components. Option B is a functional component, and option C is incorrect because it's trying to define a function inside the render method of a class component.
Similar Questions
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