example.js

class ListSelect extends React.Component {

    constructor(props) {
    	super(props);
        this.state = { selected: null };
    }
    
    render() {
        let items = [{ 'name': 1, value: 1 }, { 'name': 2, value: 2 }];
        return (
          <select value={this.state.selected || ''} onChange={e => this.setState({ selected: e.target.value || null })}>
              {
                    items.map(function (item) {
                        return <option value={item.name}>{item.name}</option>;
                    })
              }
          </select>);
    }
}