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我试图使用React和Typescript创建一个简单的标签应用程序。我有一个名为Tabs的Container组件处理状态并将其传递给我的内容组件。我也创建了一个。称为'handleName'的函数,我将它传递给我称为侧栏的功能组件。当函数被触发时,它应该更新我的状态,从而重新呈现我的内容组件。但是,它不起作用。而且我的控制台也没有出现任何错误。它只是没有做任何事情。从容器传递函数到React + TypeScript中的功能组件
这里是我的标签(容器)
import * as React from 'react';
import Sidebar from './Sidebar';
import Content from './Content';
import './css/Tabs.css';
export interface State {
message: string;
}
class Tabs extends React.Component<{}, State> {
public state: State = {
message: 'Select a name from the tabs menu',
};
componentWillMount() {
if ('pluginLoaded' in window) {
(window as any).pluginLoaded('hello', function (port: any, context: any) {
// Future work should interact with the message channel here
});
}
}
handleName(value: string) {
if (value === 'Vanessa') {
this.setState({
message: 'Vanessa means "butterfly"'
});
} else if (value === 'Paola') {
this.setState({
message: 'Paola means "small"'
});
}
}
render() {
return (
<div className="Tabs">
<p>Tabs</p>
<Sidebar handleName={() => this.handleName}/>
<Content message={this.state.message}/>
</div>
);
}
}
export default Tabs;
这里是我的边栏
import * as React from 'react';
export interface Props {
handleName: (value: String) => void;
}
const Sidebar: React.StatelessComponent<Props> = (props) => {
// declare constants
const Vanessa = 'Vanessa',
Paola = 'Paola';
return(
<div className="Sidebar">
<h1>Tabs</h1>
<ul>
<li><a onClick={() => props.handleName(Vanessa)}>Vanessa</a></li>
<li><a onClick={() => props.handleName(Paola)}>Paola</a></li>
</ul>
</div>
);
};
export default Sidebar;
这里是我的内容
import * as React from 'react';
export interface Props {
message: string;
}
const Content: React.StatelessComponent<Props> = (props) => {
return(
<div className="Content">
<h1>Find the meaning</h1>
<p>{props.message}</p>
</div>
);
};
export default Content;
@vanegeek看答案。为handleName使用箭头函数。所以将你的方法定义从'handleName(value:string){'转换为''handleName =(value:string)=> {' –
非常感谢你Prakash !!!!!!!! – vanegeek