<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>对props进行限制</title> </head> <body> <!-- 准备好一个“容器” --> <div id="test1"></div> <div id="test2"></div> <div id="test3"></div> <!-- 引入react核心库 --> <script type="text/javascript" src="../js/react.development.js"></script> <!-- 引入react-dom,用于支持react操作DOM --> <script type="text/javascript" src="../js/react-dom.development.js"></script> <!-- 引入babel,用于将jsx转为js --> <script type="text/javascript" src="../js/babel.min.js"></script> <!-- 引入prop-types,用于对组件标签属性进行限制 --> <script type="text/javascript" src="../js/prop-types.js"></script> <script type="text/babel"> //创建组件 function Person (props){ const {name,age,sex} = props return ( <ul> <li>姓名:{name}</li> <li>性别:{sex}</li> <li>年龄:{age}</li> </ul> ) } Person.propTypes = { name:PropTypes.string.isRequired, //限制name必传,且为字符串 sex:PropTypes.string,//限制sex为字符串 age:PropTypes.number,//限制age为数值 } //指定默认标签属性值 Person.defaultProps = { sex:'男',//sex默认值为男 age:18 //age默认值为18 } //渲染组件到页面 ReactDOM.render(<Person name="jerry"/>,document.getElementById('test1')) </script> </body> </html>