vue有ref来获取template里面的子组件/子元素，react当然也有：
<!DOCTYPE html>
<html lang="en">
<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>Document</title>
</head>
<body>
<div id="app"></div>
<script src="common/react.js"></script>
<script src="common/react-dom.js"></script>
<script src="https://cdn.bootcss.com/babel-core/5.8.38/browser.js"></script>
<script type="text/babel">
class App extends React.Component {
constructor(opts) {
super(opts)
this.focus = this.focus.bind(this)
}
focus() {
//this.refs.amie获取的是原生的"<input ref="amie" type="text" />"DOM
this.refs.amie.focus()
}
render() {
return <div>
<input ref="amie" type="text" />
<input type="button" value="focus" onClick={this.focus}/>
</div>
}
}
ReactDOM.render(
<App />,
document.getElementById(‘app‘)
)
</script>
</body>
</html>
原文地址：https://www.cnblogs.com/amiezhang/p/8505909.html
时间： 2024-07-30 06:26:22