this.setState({name: res.data[0].username});

this.setState({name: JSON.stringify(res.data)});

class LeaderBoard extends React.Component {

 constructor(props) {
    super(props)
  this.state = {
    name: []
          }
  }

componentDidMount(){

axios.get('https://fcctop100.herokuapp.com/api/fccusers/top/recent').then(res =>
{

this.setState({name: res.data[0].username});
   });

}


render () {

return (
  <div>
    <h1>{this.state.name}</h1>

  </div>
  )
 }
}


ReactDOM.render(
<LeaderBoard/>, document.getElementById("app"));