React（一）

prop实例

<div id="app"></div>

<script src="bower_components/react/react.min.js"></script>
<script src="bower_components/react/react-dom.min.js"></script>
<script src="lib/babel-core/browser.min.js"></script>
<script type="text/babel">
    var MessageBox = React.createClass({
        getInitialState: function () {
            return {
                isVisible: true,
                titleMessage: ‘你好世界（来自state哦）‘,
                subMessages: [
                    ‘我会代码搬砖‘,
                    ‘以及花式搬砖‘,
                    ‘不说了，工头叫我回去搬砖了。。。。。‘
                ]
            }
        },
        render: function () {
            return (
                <div>
                    <h1>{this.state.titleMessage}</h1>
                    <SubMessage messages={this.state.subMessages} />
                </div>
            )
        }
    });
    var SubMessage = React.createClass({
        propTypes: {
            messages: React.PropTypes.array.isRequired
        },
        getDefaultProps: function () {
            return {
                messages: [‘默认的子消息‘] // 防止this.props.messages不存在
            }
        },
        render: function () {
            var msgs = [];
            this.props.messages.forEach(function (msg, index) {
                msgs.push(
                        <p>码农说：{msg}</p>
                );
            });

            return (
                <div>{msgs}</div>
            )
        }
    });

    var messageBox = ReactDOM.render(
        <MessageBox/>,
        document.getElementById(‘app‘)
    );
</script>