学习react-环境&手脚架&页面&路由
1. 搭建环境
- 安装node和npm
在下面网址下载node,并安装
https://nodejs.cn/
#检测是否ok
node -v
npm -v
- 安装react
npm install -g create-react-app
2. 创建手脚架(TypeScript)
create-react-app my-app --template typescript
cd my-app
npm start
3.页面结构
4.引入Router
npm install react-router-dom typescript
5.创建页面
创建HomePage页面:HomePage.tsx和HomeMeta.tsx
// HomeMeta.tsx
export type HomeProp={
name:string;
}
export type HomeState={
count:number;
}
// HomePage.tsx
class HomePage extends Component<HomeProp, HomeState> {
constructor(props: HomeProp) {
super(props);
this.state = { count: 0 };
}
render() {
const { name } = this.props; //解构赋值
return <h1>Hello, {name}!</h1>;
}
}
export default HomePage;
创建LoginPage页面:LoginPage.tsx和LoginMeta.tsx
// LoginMeta.tsx
export interface LoginProp{
name:string;
}
export interface LoginState{
count:number;
}
// LoginPage.tsx
class LoginPage extends Component<LoginProp, LoginState> {
constructor(props: LoginProp) {
super(props);
this.state = { count: 0 };
}
render() {
return <h1>Hello, {this.props.name}!</h1>;
}
}
export default LoginPage;
创建NotFoundPage.tsx和Meta.tsx
// Meta.tsx
export interface MetaProp{
name:string;
}
export interface MetaState{
count:number;
}
class NotFoundPage extends Component<MetaProp, MetaState> {
constructor(props: LoginProp) {
super(props);
this.state = { count: 0 };
}
render() {
return <h1>Hello, {this.props.name}!</h1>;
}
}
export default NotFoundPage;
6.配置路由
在Index.tsx配置HashRouter
const root = ReactDOM.createRoot(
document.getElementById('root') as HTMLElement
);
root.render(
<React.StrictMode>
<HashRouter>
<App />
</HashRouter>
</React.StrictMode>
);
// App.tsx
function App() {
return (
<div className="App">
<Routes>
<Route path="/" element={<HomePage name='test' />} />
<Route path="login" element={<LoginPage name='login'/>} />
<Route path="*" element={<NotFoundPage name='not found'/>} />
</Routes>
</div>
);
}
// App.css
.App {
text-align: center;
}
输入:
http://localhost:3000/#login 跳到login页
http://localhost:3000/#ttt 跳到not found page
http://localhost:3000 跳到HomePage
7.路由配置文件分离
创建Router.tsx
// Router.tsx
const routes: RouteObject[] = [
{
path: '/',
element:<HomePage name={"test"} /> //<Navigate to='home/one' /> // 重定向
},
{
path: 'login',
element: <LoginPage name={"login"} />
},
// 未匹配到页面
{
path: '*',
element: <NotFoundPage name={"notfound"} />
}
]
export default routes;
使用Router.tsx
// App.tsx
function App() {
const element = useRoutes(routes);
return (
<div className="App">
{element}
</div>
);
}
输入:
http://localhost:3000/#login 跳到login页
http://localhost:3000/#ttt 跳到not found page
http://localhost:3000 跳到HomePage
原文地址:https://blog.csdn.net/jacklam200/article/details/140449261
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