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我試圖使用React和Typescript創建一個簡單的標籤應用程序。我有一個名爲Tabs的Container組件處理狀態並將其傳遞給我的內容組件。我也創建了一個。稱爲'handleName'的函數,我將它傳遞給我稱爲側欄的功能組件。當函數被觸發時,它應該更新我的狀態,從而重新呈現我的內容組件。但是,它不起作用。而且我的控制檯也沒有出現任何錯誤。它只是沒有做任何事情。從容器傳遞函數到React + TypeScript中的功能組件
這裏是我的標籤(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;
這裏是我的邊欄
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;
這裏是我的內容
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。爲handleName使用箭頭函數。所以將你的方法定義從'handleName(value:string){'轉換爲''handleName =(value:string)=> {' –
非常感謝你Prakash !!!!!!!! – vanegeek