props的简写：用static 就可以把类的属性写在类的里面
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<head>
<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>_props的简写方式</title>
</head>
<body>
<div id="test"></div>
<div id="test1"></div>
<div id="test2"></div>
<script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<script src="https://cdn.staticfile.org/prop-types/15.6.1/prop-types.js"></script>
<script type="text/babel">
class Person extends React.Component {
// props的简写：用static 就可以把属性写在类里面
static propTypes = {
name: PropTypes.string.isRequired,
sex: PropTypes.string,
age: PropTypes.number,
speak: PropTypes.func
}
static defaultProps = {
sex: 'boy',
age: 19
}
render () {
const { name, sex, age } = this.props
return (
<ul>
<li>姓名: { name }</li>
<li>性别: { sex }</li>
<li>年龄: { age }</li>
{speak()}
</ul>
)
}
}
function speak() {
return '说话'
}
ReactDOM.render(<Person name="tom" speak={speak} />, document.getElementById('test'))
</script>
</body>
</html>
