React（十）：props的基本使用 

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>props的基本使用</title>
    <script src="https://unpkg.com/react@18/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>

    <!-- Don't use this in production: -->
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>

</head>

<body>

    <div id="test1"></div>
    <div id="test2"></div>
    <div id="test3"></div>

</body>

<script type="text/babel">
    class Person extends React.Component {
        render() {
            const { name, sex, age } = this.props
            return (
                <ul>
                    <li>姓名：{name}</li>
                    <li>性别：{sex}</li>
                    <li>年龄：{age}</li>
                </ul>
            )
        }
    }

    //基本使用
    ReactDOM.render(<Person name="张三" age="15" sex="男" />, document.getElementById('test1'))
    ReactDOM.render(<Person name="李四" age="16" sex="男" />, document.getElementById('test2'))

    //批量传递props
    const p = {name: "王五", age: 17, sex: "女"}
    ReactDOM.render(<Person {...p} />, document.getElementById('test3'))

</script>

</html>

 需要注意的是props是只读的，不能修改

posted @ 2023-07-30 18:50  谁知道水烫不烫  阅读(7)  评论(0)  编辑  收藏  举报