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

0 vote346 views1 answer
Type '{ GlobalState: any; Dispatch: React.Dispatch<any>; }' is not assignable to type 'null'
Javascript React
0 vote370 views1 answer
Rich text react renderer
Javascript React
0 vote383 views1 answer
React modal scroll 2 overlapping components
Javascript React
2 votes395 views1 answer
All react navigation packages
Javascript React
3 votes353 views1 answer
React router dom current path hook
Javascript React
10 votes391 views2 answers
React navigation no header
Javascript React
-1 vote381 views1 answer
React slick npm
Javascript React
0 vote365 views1 answer
Owl carousel for react
Javascript React
0 vote316 views1 answer
How to use algolia react native
Javascript React
0 vote376 views1 answer
React testing library Property 'value' does not exist on type 'HTMLElement'.ts(2339)
Javascript React