/Javascript/React/React higher order components

React higher order components

// This function takes a component...
function withSubscription(WrappedComponent, selectData) {
  // ...and returns another component...
  return class extends React.Component {
    constructor(props) {
      super(props);
      this.handleChange = this.handleChange.bind(this);
      this.state = {
        data: selectData(DataSource, props)
      };
    }

    componentDidMount() {
      // ... that takes care of the subscription...
      DataSource.addChangeListener(this.handleChange);
    }

    componentWillUnmount() {
      DataSource.removeChangeListener(this.handleChange);
    }

    handleChange() {
      this.setState({
        data: selectData(DataSource, this.props)
      });
    }

    render() {
      // ... and renders the wrapped component with the fresh data!
      // Notice that we pass through any additional props
      return <WrappedComponent data={this.state.data} {...this.props} />;
    }
  };
}

Similar codes

1 vote119 views1 answer
React map component in
Javascript React
4 votes122 views2 answers
How to use react-native-vector-icons
Javascript React
0 vote141 views1 answer
Settimeout react native focus text input
Javascript React
-2 votes158 views3 answers
React and express
Javascript React
0 vote118 views1 answer
React native elements bottom sheet
Javascript React
0 vote121 views1 answer
Sort by string react
Javascript React
113 votes141 views6 answers
React app
Javascript React
0 vote121 views1 answer
React modal scroll 2 overlapping components
Javascript React
0 vote106 views1 answer
Ts(2749) react testing library
Javascript React
0 vote124 views1 answer
Make forn awesome icon clickable in react
Javascript React