react 组件之间的参数传递

const MessageBox = React.createClass({
            getInitialState:function() {
                return {
                    title: 'props属性传值',
                    messages: ['messages1','messages2','messages3','messages4']
                }
            },
            render: function () {
                return (
                    

                        
我是子组件1
                        
{this.state.title}
                        this.state.messages}/>
                    
                )
            }
        });
        const SubMessageBox = React.createClass({
            propTypes: { // 声明数据类型
                messages: React.PropTypes.array.isRequired
            },
            getDefaultProps: function(){
                return {
                    messages: ['若未传message，会报未定义，故此这里定义一个默认值，即使为空数组也行，但一定要定义']
                }
            },
            render:function() {
               {/* let messages = [];
                this.props.messages.forEach(function(msg,index) {
                    console.log(msg);
                    messages.push(msg)
                });
                console.log(this.props.messages)*/}
                return(
                    

                        
我是子组件2
                        
{this.props.messages}
                        
this.props.messages} />
                    
                )
            }
        })
        const Footer = React.createClass({
            render:function() {
                let messages = [];
                this.props.messages.forEach(function(msg,index) {
                    msg += index
                    messages.push(msg)
                });
                return (
                    

                        
我是子组件3
                        
{messages}
                    
                )
            }
        })
       const MessageBoxObj =  React.render(
            ,
            document.getElementById('app'),
            function() {
                console.log('渲染完成');
            }
        );