jsx react 写三元表达式

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>jsx样式介绍</title>
    <style>
       .demo{
            width: 300px;
            height: 300px;
            line-height: 80px;
            text-align: center;
            color: red;
            border: 1px solid red;
        }
       .title{
   color:plum
       }
       .subtitle{

       }
       .details{

       }
       .box1{
           background: darkcyan;
       }
       .box2{
           background: lawngreen;
       }
    </style>
    <!-- react的核心组件第一个加载 -->
    <script src="js/react.min.js"></script>
    <!-- react-dom ReactDOM对DOM节点的一点操作 -->
    <script src="js/react-dom.min.js"></script>
    <script src="js/browser.js"></script>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
        
         var yang = {
                    color:'blue',
                    background:'yellow',
                    fontSize:'20'
                };
        var Demo = React.createClass({
            getInitialState:function(){
                 return{
                     onOff:true
                 }
            },
            abc:function(){
                console.log(this.state)
                    this.setState({
                        onOff:!this.state.onOff
                    })
                 },
            render:function(){
                // this当前的组件
                return <div className='demo'> 
                           <h1 onClick={this.abc} className='title' style={{color:'yellow',background:'red'}}>默认标题</h1>
                           <p className='subtitle'>说明</p>
                           <p className={this.state.onOff?'box1':'box2'} onClick={this.abc}>这个</p>
                    </div>
            }
        })
        ReactDOM.render(<Demo />,document.getElementById('app'))
    </script>
</body>
</html>
jsx react 写三元表达式

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