var Grandson = React.createClass({
    render: function(){
        return (
            <div style={{border: "1px solid red",margin: 10px"}}>{this.props.name}：
                <select onChange={this.props.handleSelect}>
                    <option value=男">男</option>
                    <option value=女">女</option>
                </select>
            </div>
        )
    }
});
var Child = React.createClass({
    render: function(){
        1px solid green"}}>
                {this.props.name}：<input onChange={this.props.handleVal}/>
                <Grandson name=性别" handleSelect={this.props.handleSelect}/>
            </div>
        )
    }
});
var Parent = React.createClass({
    getInitialState: function(){
        return {
            username: '',sex: ''
        }
    },handleVal: function(event){
        this.setState({username: event.target.value});
    },handleSelect: function(event) {
        this.setState({sex: 1px solid #000"}}>
                <div>用户姓名：{this.state.username}</div>
                <div>用户性别：{this.state.sex}</div>
                <Child name=姓名" handleVal={this.handleVal} handleSelect={this.handleSelect}/>
            </div>
        )
    }
});
React.render(
  <Parent />,document.getElementById('test')
);