Props react

Pass props in react

/* PASSING THE PROPS to the 'Greeting' component */
const expression = 'Happy';
<Greeting statement='Hello' expression={expression}/> // statement and expression are the props (ie. arguments) we are passing to Greeting component

/* USING THE PROPS in the child component */
class Greeting extends Component {
  render() {
    return <h1>{this.props.statement} I am feeling {this.props.expression} today!</h1>;
  }
}

Props in class react

class MouseTracker extends React.Component {
  constructor(props) {
    super(props);
    this.handleMouseMove = this.handleMouseMove.bind(this);
    this.state = { x: 0, y: 0 };
  }

  handleMouseMove(event) {
    this.setState({
      x: event.clientX,
      y: event.clientY
    });
  }

  render() {
    return (
      <div style={{ height: '100vh' }} onMouseMove={this.handleMouseMove}>
        <h1>Move the mouse around!</h1>
        <p>The current mouse position is ({this.state.x}, {this.state.y})</p>
      </div>
    );
  }
}

Source: reactjs.org

React js props

function App() {
  return (
    <div className="App">
      <NewComponent name="Ariful Islam Adil" profession="Web-Developer"></NewComponent>
    </div>
  );
}

function NewComponent(props) {
  return (
    <div className="test-class">
      <h1>Name: {props.name}</h1>
      <h3>Profession: {props.profession}</h3>
    </div>
  )
}
export default App;

Créer composant react

1. Dans le terminal :
npx create-react-app [ nom dossier]
cd [ nom dossier]
npm start

2.désinstaller package :
npm uninstall -g create-react-app

Similar codes

-1 vote391 views2 answers
How to connect react to backend
Javascript React
31 votes383 views1 answer
Npm install react-router-dom --save
Javascript React
0 vote389 views1 answer
ERROR TypeError: undefined is not an object (evaluating '_reactNative.Styles.m aincont')
Javascript React
0 vote385 views2 answers
React native navigation header Right
Javascript React
8 votes418 views2 answers
Set value as object in react hooks
Javascript React
20 votes397 views6 answers
Build apk react native
Javascript React
1 vote379 views1 answer
Press enter reaction js
Javascript React
0 vote390 views1 answer
Failed to construct image react-native
Javascript React
0 vote393 views1 answer
Use of undeclared identifier 'gmsservices' react native
Javascript React
0 vote391 views1 answer
React native dynamic style
Javascript React