lovecoding
/
VIP32


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./babel.min.js"></script>
    <script src="./react.development.js"></script>
    <script src="./react-dom.development.js"></script>
    <style>
        .box {
            width: 300px;
            height: 300px;
            margin-left: 30px;
            background: #00f;
        }
        .text {
            color: #fff;
            font-size: 30px;
        }
        .reds {
            color: #f00;
        }
        .yellows {
            color: #ff0;
        }
    </style>
</head>
<body>
    <!-- 
    样式绑定：
        1.class => className:在样式表中定义样式
        2.style：在jsx语法中直接定义样式
        className绑定：
            className = "类名"
            className = {"类名1 类名2...."}
    -->
    <div id="root"></div>
    <script type="text/babel">
        const root = ReactDOM.createRoot(document.getElementById("root"));
        // let element = <div className="box">你好，我有一个帽衫</div>
        let element = <div className={'box text'}>你好，我有一个帽衫</div>
        // jsx中样式写法 只能是Object 不能是String
        // 多单词组合样式改为驼峰命名法
        let main = {
            width: "500px",
            height: "500px",
            border: "1px solid #000",
            margin: "100px auto",
            display:"flex",
            justifyContent: "space-between",
        } 
        let left = {
            flex: "6.5",
            height: "100%",
            backgroundColor: "#f00"
        } 
        let right = {
            flex: "2.5",
            height: "100%",
            backgroundColor: "#ff0"
        }
        element = (
            <div style={main}>
                <div style={left}></div>
                <div style={right}></div>    
            </div>
        )
        element = <div className={5 < 2?'reds':'yellows'}>你好</div>
        root.render(element)
    </script>
</body>
</html>