我想在可选属性上设置默认值，但是又不想在render 里给value 设默认值
const { value =5} = this.props
我找了很多方法，Partial也不行，以下是我代码
错误如下
import * as React from "react";
class App extends React.Component {
public render() {
return <A test={"a"} />;
}
}
type AProps = {
value?: number;
[propName: string]: any;
};
class A extends React.Component<AProps, any> {
static defaultProps = {
value: 5,
};
public render() {
const { value } = this.props;
return <B value={value} />;
}
}
type BProps = {
value: number;
};
class B extends React.Component<BProps, any> {
public render() {
const { value } = this.props;
return <div>{value}</div>;
}
}
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4