/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

4 votes125 views1 answer
External site links in react Link
Javascript React
0 vote114 views1 answer
Cloudinary react
Javascript React
0 vote115 views1 answer
Make forn awesome icon clickable in react
Javascript React
18 votes111 views4 answers
React for loop in render
Javascript React
0 vote97 views1 answer
How to have hotjar in react-hotjar
Javascript React
0 vote109 views1 answer
React video srcObject
Javascript React
0 vote110 views1 answer
React live chat widget
Javascript React
6 votes113 views4 answers
Add items to a react array in hooks
Javascript React
0 vote121 views2 answers
React date picker disable past dates
Javascript React
0 vote234 views1 answer
Swap scroll right in react native
Javascript React