/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

0 vote234 views1 answer
Return multiple native element react native
Javascript React
-1 vote212 views1 answer
How to insert divider in react native
Javascript React
0 vote226 views1 answer
React native cli sdk.dir
Javascript React
0 vote244 views1 answer
Reactstrap search bar
Javascript React
0 vote206 views1 answer
How to clear text ibput after message sent react native
Javascript React
0 vote217 views1 answer
Configure the Chrome debugger react
Javascript React
2 votes217 views1 answer
React array find index
Javascript React
0 vote210 views1 answer
Form.Control textarea react bootstrap
Javascript React
5 votes213 views2 answers
What hostings can run react js
Javascript React
0 vote161 views1 answer
Debugging react native
Javascript React