React state and props

HTML

<script src="http://fb.me/JSXTransformer-0.13.0.js"></script>
<script src="http://fb.me/react-with-addons-0.13.0.js"></script>

JavaScript 1.7

function book(props){
 return (
  <div><div>{props.author.name}</div>
  <div> {props.author.lastName}</div>
  <div> {props.isbn}</div>
    <div> {props.title}</div>
   </div>
)
}
const book={

title:"jgjs",
author{
name:"sds",
lastName:"sd"
}
}

ReactDom.render{
<Book date = {book.date}title={book.title} author={book.author}/>
document.getElementById('root')
};