react.js-06-propTypes类型校验

var data = 123;

  var MyTitle = React.createClass({

    propTypes: {

      title: React.PropTypes.string.isrequired,},render: function() {
      return <h1> {this.props.title} </h1>;
    }
  });

  ReactDOM.render(
    <MyTitle title={data} />,document.body
  );