The React Toolbar is a feature-rich component that provides an interface for selecting a command from a collection of commands. Its features include different orientations, responsive modes (scrollable and pop-u
(<Router><NavbarisLoggedIn={isLoggedIn}/><Routeexactpath="/"component={Home}/><Routepath="/login"component={Login}/><PrivateRoutepath="/profile"component={()=><h1>个人资料页面</h1>}isLoggedIn={isLoggedIn}/><PrivateRoutepath="/settings"component={()=><h1>设置页面</h1>}isLogged...
新建components/NavBar/style.module.less 文件,用于编写底部导航栏样式,代码如下所示: .tab{ border-top:1pxsolid#e9e9e9; } 1. 2. 3. 4.使用标签栏组件 打开App.jsx,添加如下代码: import React, { useState, useEffect } from 'react' import NavBar from '@/components...
import React from 'react'; import { BrowserRouter, Route } from 'react-router-dom'; import NavBar from './NavBar'; import Page from './Page'; const App = () => { return ( <BrowserRouter> <NavBar /> <Route path="/page" component={Page} /> </BrowserRouter> ); } export de...
useEffect() 用来引入具有副作用的操作,最常见的就是向服务器请求数据。以前放在 componentDidMount 里面的代码,现在可以放在 useEffect()。 useEffect(() =>{//Async Action}, [dependencies]) useEffect() 接受两个参数,第一个参数是一个函数,异步操作的代码放在里面。第二个参数是一个数组,用于给出 Effect 的...
$ npm install react-native-navbar --save Import it in the file where you want to use it: import NavigationBar from 'react-native-navbar'; Add it to your React element tree: const styles = { container: { flex: 1, }, }; const rightButtonConfig = { title: 'Next', handler: (...
NavBar TheNavBarcomponent is the main wrapper of all the other components. It creates the base navigation bar in iOS and Android and includes theStatusBar. You can pass any valid React Element or set of elements into it, making it very configurable. ...
function ComponentTwo({ data }) { return <h3>This is Component two with the received state {data}</h3> } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 在这个示例中,App组件创建了一个状态data,并将其作为ComponentTwo的prop传递给ComponentOne。Compone...
//加了路由后加路由跳转按钮 import React,{Component,Fragment} from 'react'; import { Link } from 'react-router-dom'; import withStyles from '../../withStyles'; class Header extends Component { render() { return ( <nav className="navbar navbar-inverse navbar-fixed-top"> <div className...
[pathname]) // [] 内的参数若是变化,便会执行上述回调函数return <><ConfigProvider primaryColor={'#007fff'}><Routes>{routes.map(route => <Route key={route.path} path={route.path} element={<route.component />}></Route>)}</Routes></ConfigProvider><NavBar showNav={showNav} /></>}...