JavaScript React Components Managing State and Data Flow Managing State Review

setState is hard to know quickly ,please fill blank

class ControlledInput extends Component {
  state = {
    value: ' '
  };
  handleChange(e) {
    this.setState({ value:  });
  }
  render() {
    return (
      <input 
        type="text" 
        value={  }   
        ={ this.handleChange }
      />
    );
  }
}