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我试图在react
这个代码,但我得到这个错误:收到错误消息:意外的标记
Unexpected Token .
我试图bind
价值的东西上html
,看看价值变动反映在html
上,如angular ng-bindings
。
代码:
class NameForm extends React.Component {
constructor(props) {
super(props);
this.state = {value: ''};
this.handleChange = this.handleChange.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
}
handleChange(event) {
this.setState({value: event.target.value});
}
handleSubmit(event) {
alert('A name was submitted: ' + this.state.value);
event.preventDefault();
}
render() {
return (
<form onSubmit={this.handleSubmit}>
<label>
Name:
<input type="text" value={this.state.value} onChange={this.handleChange} />
</label>
<input type="submit" value="Submit" />
</form>
<a>{this.state.value}</a>
);
}
}
ReactDOM.render(
<NameForm />,
document.getElementById('root')
);
谁能告诉我在哪里,我错了。