react-gs.js

const Card = (props) => {
	
  return (
    <div style={{margin: '1em'}}>
  	  <img width="75" src={props.avatar_url} />
      <div style={{display: 'inline-block', marginLeft: 10}}>
      	<div style={{fontSize: '1.25em', fontWeight: 'bold'}}>
        	{props.name}
        </div>
        <div>{props.company}</div>
      </div>
  	</div>
  );

}


const CardList = (props) => {
	return(
  	<div>
    	{props.cards.map(card => <Card {...card} />)}
    </div>
  );
}

class Form extends React.Component {
	state = {
  	userName: ''
  }
  handleSubmit = (event) =>{
  	event.preventDefault();
    axios.get(`https://api.github.com/users/${this.state.userName}`)
    	.then(resp => {
      	this.props.onSubmit(resp.data)
        this.setState({userName: ''})
      })
  };
  
  render(){
  	return(
    	<form onSubmit={this.handleSubmit}>
      	<input
        	value={this.state.userName}
          onChange={(event) => this.setState({userName: event.target.value })}
          type="text" placeholder="Github username" />
        <button type="submit">Add Card</button>
      </form>
    );
  }
}

class App extends React.Component {
	state = {
  	cards: []
  }
  
  addNewCard = (cardInfo) => {
  	this.setState(prevState => ({
    	cards: prevState.cards.concat(cardInfo)
    }))
  };
  
	render(){
  	return(
    	<div>
        <Form onSubmit={this.addNewCard}/>
        <CardList cards={this.state.cards} />
      </div>
    );
  }
}

ReactDOM.render(<App />, mountNode)