content: import React from 'react';
  import DropDownMenu from 'material-ui/DropDownMenu';
  import MenuItem from 'material-ui/MenuItem';
  
  const items = [];
  for (let i = 0; i < 100; i++ ) {
    items.push(<MenuItem value={i} key={i} primaryText={`Item ${i}`} />);
  }
  
  export default class DropDownMenuLongMenuExample extends React.Component {
  
    constructor(props) {
      super(props);
      this.state = {value: 10};
    }
  
    handleChange = (event, index, value) => this.setState({value});
  
    render() {
      return (
        <DropDownMenu maxHeight={300} value={this.state.value} onChange={this.handleChange}>
          {items}
        </DropDownMenu>
      );
    }
  }
  