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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">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Hello Form</title>
<script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script>
<script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
class NameForm extends React.Component {
constructor(props) {
super(props);
this.input = React.createRef();
this.handleSubmit = this.handleSubmit.bind(this);
}
handleSubmit(event) {
alert('接受到的name值是:' + this.input.current.value);
event.preventDefault();
}
render() {
return (
<form onSubmit={this.handleSubmit}>
<input type="text" ref={this.input} />
<input type="submit" value="提交" />
</form>
)
}
}
ReactDOM.render(
<NameForm />,
document.getElementById('root')
)
</script>
</body>
</html>
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