我正在使用react-select
允许用户从给定的 FEATURE 列表中进行多项选择。我的打字稿代码看起来像这样
`
import React from "react";
import { Select } from "react-select";
import { FEATURE } from "routes/models/constants";
interface FeatureSelectProps {
SelectedOption ?: string;
}
export default class FeatureSelect extends React.Component<FeatureSelectProps, any> {
handlechange(SelectedOption: any)
{
this.setState({SelectedOption});
if(SelectedOption)
{
console.log(`Selected: ${SelectedOption.label}`);
}
}
render() {
const { SelectedOption = ' ' } = this.state;
return (
<Select multi={true}
name="Features"
placeholder="+ Add Feature"
options={FEATURE}
value={SelectedOption}
onChange={this.handlechange} />
);
}
}
`
在加载页面时显示此错误:Uncaught TypeError: Cannot read property 'SelectedOption' of null
相同的原因是什么以及如何解决?