React Router not rendering anything - javascript

when using react-router-dom, I cannot render any of my components or anything.
All it does is show a white screen, it doesn't add anything to my index.html template.
There aren't any errors however it says that in index.js there are unused variables that are my components.
Heres my code:
index.js
// Imports
import React from 'react';
import ReactDOM from 'react-dom';
import './css/index.css';
import { BrowserRouter as Router, Route, Routes } from 'react-router-dom';
import { navbar, footer, home } from './components';
ReactDOM.render(
<Router>
<navBar />
<Routes>
<Route path="/" element={<home />} />
</Routes>
<footer />
</Router>,
document.getElementById("root")
);
home.jsx
import React from "react";
function home(){
return(
<div className="home">
<div class="container">
<div class="row allign-items-center my-5">
<div class="col-lg-7">
<img class="img-fluid rounded mb-4 mb-lg-0" src="./img/pizza.jpg" alt=""/>
</div>
<div class="col-lg-5">
<h1 class="font-weight-light">cencored</h1>
<p>cencored</p>
</div>
</div>
</div>
</div>
)
}
export default home;
navBar.jsx
import React from 'react';
import {NavLink} from 'react-router-dom';
function navBar(){
return(
<div className="navBar">
<nav className="navbar navbar-expand navbar-dar bg-dark">
<div className="container">
<NavLink className="navbar-brand" to="/"><img src="../img/logo.png" alt="logo" style="width:500px;height:500px;"/></NavLink>
<div>
<ul className="navbar-nav ml-auto">
<li className="nav-item">
<NavLink className="nav-link" to="/menu">Menu</NavLink></li>
<li className="nav-item">
<NavLink className="nav-link" to="/about">About</NavLink></li>
<li className="nav-item">
<NavLink className="nav-link" to="/contact">Contact</NavLink></li>
</ul>
</div>
</div>
</nav>
</div>
);
}
export default navBar;
footer.jsx
import React from 'react';
import {NavLink} from 'react-router-dom';
function footer(){
return(
<div className="footer">
<footer class="py-5 bg-dark fixed-bottom">
<div class="container">
<p class="m-0 text-center text-white">cencored</p>
</div>
<div>
<ul className="navbar-nav ml-auto">
<li className="nav-item">
<NavLink className="nav-link" to="/">Home</NavLink></li>
<li className="nav-item">
<NavLink className="nav-link" to="/menu">Menu</NavLink></li>
<li className="nav-item">
<NavLink className="nav-link" to="/about">About</NavLink></li>
<li className="nav-item">
<NavLink className="nav-link" to="/contact">Contact</NavLink></li>
</ul>
</div>
</footer>
</div>
);
}
export default footer;
index.js (component exports)
export { default as navbar } from './navBar';
export { default as footer } from './footer';
export { default as home } from './home';

Instead of using the element prop on your Route try to component prop like
<Route path="/" component={Home}>
You also must capitalize components.

React components should use PascalCase names.
export { default as Navbar } from './navBar';
export { default as Footer } from './footer';
export { default as Home } from './home';
...
import { Navbar, Footer, Home } from './components';
ReactDOM.render(
<Router>
<NavBar />
<Routes>
<Route path="/" element={<Home />} />
</Routes>
<Footer />
</Router>,
document.getElementById("root")
);

You are missing import of Switch from 'react-router-dom' and after you have to wrap your Routes into . And into Routes you have to add all of your components with path not only Home component.
Pseudo code:
import { Switch, Route, Router } from "react-router-dom";
import Home from '.....path'
//import all routing componets
const Routes = () => {
return(
<Switch>
<Route exact path='/' component={Home}>
<Route exact path='/comp1' component={Comp1}>
<Route exact path='/comp2' component={Comp2}>
</Switch>)}
const App = () => {
<Router>
<GlobalNav />
<Container fluid={true}>
<SideNav />
<Routes />
</Container>
</Router>}
Then you can add your navbar anywhere but has to be wrapped into router. I just added as example i can have a typo somewhere but if you follow the concept it should work. And change your components to Pascal naming.

Related

How can i fix this problem when i call cartItems

Ive been trying to fix my JS code for an E-Commerce site for a long time and nothing seems to be working, I've tried putting it in other ways and I've done quite a-lot of research in the past few weeks. If someone could help it would be very much appreciated. I cant seem to get it working so please someone help!!!
Heres my code
import React from "react";
import { Link } from "react-router-dom";
import { FaBars } from "react-icons/fa";
import { useSelector } from "react-redux"
function Header() {
const {cartItems} = useSelector(state=> state.cartReducer)
return (
<div className="header">
<nav className="navbar navbar-expand-lg navbar-light bg-light">
<div className="container-fluid">
<Link className="navbar-brand" to="/">
Minis Services
</Link>
<button
className="navbar-toggler"
type="button"
data-bs-toggle="collapse"
data-bs-target="#navbarNav"
aria-controls="navbarNav"
aria-expanded="false"
aria-label="Toggle navigation"
>
<span className="navbar-toggler-icon">
<FaBars size={25} color="white" />
</span>
</button>
<div className="collapse navbar-collapse" id="navbarNav">
<ul className="navbar-nav ms-auto">
<li className="nav-item">
<Link className="nav-link active" aria-current="page" to="/">
User
</Link>
</li>
<li className="nav-item">
<Link className="nav-link" to="/">
Software
</Link>
</li>
<li className="nav-item">
<Link className="nav-link" to="/">
Logout
</Link>
</li>
<li className="nav-item">
<Link className="nav-link" to="/">
Cart {cartItems.length}
</Link>
</li>
</ul>
</div>
</div>
</nav>
</div>
);
}
export default Header;
Heres my app.js file
import "./App.css";
import Homepage from "./pages/Homepage";
import CartPage from "./pages/CartPage";
import Productinfo from "./pages/Productinfo";
import LoginPage from "./pages/LoginPage";
import RegisterPage from "./pages/RegisterPage";
import { Route, BrowserRouter, Routes } from "react-router-dom";
import "./stylesheets/products.css";
import "./stylesheets/layout.css";
import { Provider } from "react-redux";
function App() {
return (
<Provider>
<div className="App">
<BrowserRouter>
<Routes>
<Route path="/" exact element={<Homepage />} />
<Route path="/login" exact element={<LoginPage />} />
<Route path="/register" exact element={<RegisterPage />} />
<Route
path="/productinfo/:productid"
exact
element={<Productinfo />}
/>
<Route path="/cart" exact element={<CartPage />} />
</Routes>
</BrowserRouter>
</div>
</Provider>
);
}
export default App;
and heres my store.js file
import { createStore } from 'redux';
import { composeWithDevTools } from 'redux-devtools-extension';
import rootReducer from './rootReducer';
const composeEnhancers = composeWithDevTools({})
export const initialStore = {
cartReducer : {
cartItems : JSON.parse(localStorage.getItem(`cartItems`)) ?? []
}
}
export const store = createStore(
rootReducer,
initialStore,
composeEnhancers()
);
Heres my console error
Everything seems OK but you forgot to add store to Redux Provider
checkout this code for app.js
import "./App.css";
import Homepage from "./pages/Homepage";
import CartPage from "./pages/CartPage";
import Productinfo from "./pages/Productinfo";
import LoginPage from "./pages/LoginPage";
import RegisterPage from "./pages/RegisterPage";
import { Route, BrowserRouter, Routes } from "react-router-dom";
import "./stylesheets/products.css";
import "./stylesheets/layout.css";
import { Provider } from "react-redux";
import {store} from "/path/of/store.js/file";
function App() {
return (
<Provider store={store}>
<div className="App">
<BrowserRouter>
<Routes>
<Route path="/" exact element={<Homepage />} />
<Route path="/login" exact element={<LoginPage />} />
<Route path="/register" exact element={<RegisterPage />} />
<Route
path="/productinfo/:productid"
exact
element={<Productinfo />}
/>
<Route path="/cart" exact element={<CartPage />} />
</Routes>
</BrowserRouter>
</div>
</Provider>
);
}
export default App;
Set the path of store.js in app.js and then, I think it must work.

React page not refreshing automatically when using Router

I've been working on my first React project and used react-router to navigate to different pages. Although I have reached the functionality, I have found that I have to manually refresh the page (using F5) whenever I press the link (for eg. About or Shop in the following code) to load the content.
Here's my Code
App.js
import React from "react";
import Nav from "./Nav";
import Shop from "./Shop";
import About from "./About";
import Home from "./Home";
import { BrowserRouter as Router, Route, Switch } from "react-router-dom";
import "../App.css";
function App() {
return (
<Router>
<div className="App">
<Nav />
<Switch>
<Route path="/" exact component={Home} />
<Route path="/about" component={About} />
<Route path="/shop" component={Shop} />
</Switch>
</div>
</Router>
);
}
export default App;
Nav.js
import React from "react";
import { BrowserRouter as Router, Link } from "react-router-dom";
import "../App.css";
function Nav() {
return (
<nav>
<h3>Adifier</h3>
<ul className="nav-links">
<Router>
<Link to="/about">
<li>About</li>
</Link>
<Link to="/shop">
<li>Shop</li>
</Link>
</Router>
</ul>
</nav>
);
}
export default Nav;
About.js
import React from "react";
function About() {
return (
<div className="App">
<h1>About Page</h1>
</div>
);
}
export default About;
Shop.js
import React from "react";
function Shop() {
return (
<div className="App">
<h1>Shop Page</h1>
</div>
);
}
export default Shop;
Thanks in advance
Remove Router from Nav.js. It has already served its purpose when you defined routes in app.js
<ul className="nav-links">
<Link to="/about">
<li>About</li>
</Link>
<Link to="/shop">
<li>Shop</li>
</Link>
</ul>

ReactJs Router changes url but not the page

I am building a portfolio website and am using react BrowserRouter, Link and Switch to manage my websites routing My problem is that when I click on the 'Projects' link it changes on url but not in view, however when I refresh the page it works.
here is what my routing currently looks like in my App.js.
import React, { Component } from 'react';
import NavBar from './Components/NavBar/NavBar'
import Home from './Components/Home/Home';
import Projects from './Components/Projects/Projects';
import { BrowserRouter ,Switch, Route, } from 'react-router-dom';
class App extends Component {
render() {
return (
<div className="App">
<NavBar />
<BrowserRouter>
<Switch>
<Route path="/" component={Home} exact={true} />
<Route path="/projects" component={Projects} />
</Switch>
</BrowserRouter>
</div>
);
}
}
export default App;
and this is what my Navbar.js looks like..
import React, {useState} from 'react';
import { NavLink, BrowserRouter } from 'react-router-dom'
import { Link } from 'react-scroll';
function NavBar() {
const [navbar,setNavbar] = useState(false)
const changeBackground = () => {
if(window.scrollY >= 100) {
setNavbar(true)
} else {
setNavbar(false)
}
}
window.addEventListener('scroll', changeBackground)
return(
<BrowserRouter>
<ul className="nav bg-white sticky-top nav-tabs nav-justified">
<li className="nav-item">
<Link
className={navbar ? "nav-link text-dark home" : "nav-link text-secondary home"}
to="home"
href="/"
smooth={true}
offset={50}
duration={500}>
Home
</Link>
</li>
<li className="nav-item">
<Link
className={navbar ? "nav-link text-dark home" : "nav-link text-secondary about"}
to="about"
smooth={true}
offset={50}
duration={500}>
About
</Link>
</li>
<li className="nav-item">
<NavLink to="/projects">Projects</NavLink> //This is the link that won't work.
</li>
<li className="nav-item">
<Link
className={navbar ? "nav-link text-dark home" : "nav-link text-secondary contact"}
to="contact"
smooth={true}
offset={50}
duration={500}>
Contact
</Link>
</li>
</ul>
</BrowserRouter>
)
}
export default NavBar
Any help would be great!
The problem is that you're defining two different BrowserRouter. All your routing logic should be under one BrowserRouter:
App should be like this:
class App extends Component {
render() {
return (
<div className="App">
<BrowserRouter>
<NavBar />
<Switch>
<Route path="/" component={Home} exact={true} />
<Route path="/projects" component={Projects} />
</Switch>
</BrowserRouter>
</div>
);
}
}
and NavBar should not have the wrapping BrowserRouter

How to get authetication status in react js component?

Below is the code of the react component of my project. this.props.isAuthenticatedis working when I return the component but when I print this.props.isAuthenticated inside componentDidMount I am getting false(print logout). How do I get authentication status true or false in react component?
I have added redux already and login logout working fine.
import React, { Component } from "react";
import { NavLink, Route, withRouter } from "react-router-dom";
import NewsListView from "../Container/NewsListView";
import StatsView from "../Container/StatsView";
import VotingView from "../Container/VotingView.js";
import Rightsidebar from "../Container/rightsidebar";
import Footer from "./footer";
import Loginform from "../Container/loginform";
import SignUp from "../Container/SignUp";
import { connect } from "react-redux";
import * as actions from "../Store/actions/auth";
class Header extends React.Component {
componentDidMount() {
{
this.props.isAuthenticated ? console.log("login") : console.log("logout");
}
}
render() {
return (
<div>
<nav className="navbar navbar-inverse">
<div className="container-fluid">
<div className="navbar-header">
<button
type="button"
className="navbar-toggle"
data-toggle="collapse"
data-target="#myNavbar"
>
<span className="icon-bar" />
<span className="icon-bar" />
<span className="icon-bar" />
</button>
<NavLink className="navbar-brand" to="/">
Save4thPillar
</NavLink>
</div>
<div className="collapse navbar-collapse" id="myNavbar">
<ul className="nav navbar-nav">
<li>
<NavLink to="/" className="navlink">
Home
</NavLink>
</li>
<li>
<NavLink to="/news" className="navlink">
news
</NavLink>
</li>
<li>
<NavLink to="/stats" className="navlink">
stats
</NavLink>
</li>
{this.props.isAuthenticated ? (
<li>
<NavLink
to="/logout"
onClick={this.props.logout}
className="navlink"
>
Logout
</NavLink>
</li>
) : (
<li>
<NavLink to="/login" className="navlink">
Login
</NavLink>
</li>
)}
</ul>
</div>
</div>
</nav>
<div className="container">
<div className="row">
<div className="col-md-8">
<Route exact path="/" component={VotingView} {...this.props} />
<Route exact path="/news" component={NewsListView} />
<Route exact path="/stats" component={StatsView} />
<Route exact path="/login" component={Loginform} />
<Route exact path="/signup" component={SignUp} />
</div>
<div className="col-md-4">
<Rightsidebar />
</div>
<div />
</div>
<Footer />
</div>
</div>
);
}
}
const mapDispatchToProps = dispatch => {
return {
logout: () => dispatch(actions.logout())
};
};
export default withRouter(
connect(
null,
mapDispatchToProps
)(Header)
);
You should implement the Header component's constructor. to use props in lifecycles
class Header extends React.Component {
componentDidMount() {
{
this.props.isAuthenticated ? console.log("login") : console.log("logout");
}
constructor(props){
super(props);
}
[...]
}

React components not appearing

I have a repo at https://bitbucket.org/codyc54321/anthony-project-react
I have the homepage showing links, and when you click the links react-router works. But the text of the component is not showing up, like <div>Login page</div>, <div>Homepage</div>, etc.
index.js:
import React from 'react';
import ReactDOM from 'react-dom';
import { Router, Route, Link, IndexRoute, browserHistory } from 'react-router';
import { Provider } from 'react-redux';
import { createStore, applyMiddleware } from 'redux';
import reducers from './reducers';
import Nav from './Nav';
import Home from './components/Home';
import Login from './components/Login';
import SignupMain from './components/SignupMain';
const createStoreWithMiddleware = applyMiddleware()(createStore);
ReactDOM.render(
(
<Provider store={createStoreWithMiddleware(reducers)}>
<Router history={browserHistory}>
<Route path="/" component={Nav}>
<IndexRoute component={Home}/>
<Route path='/login' component={Login}/>
<Route path='/signup-main' component={SignupMain}/>
</Route>
</Router>
</Provider>
), document.querySelector('.container'));
Nav.js:
import React from 'react';
import { Link } from 'react-router';
export default class Nav extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<div>
<nav className="navbar navbar-default">
<div className="container-fluid">
<div className="navbar-header navbar-brand">
Home
</div>
</div>
<div id="navbar" className="navbar-right">
<ul className="nav navbar-nav">
<li><Link activeClassName="active" to="/" onlyActiveOnIndex>Home</Link></li>
<li><Link activeClassName="active" to="/login" onlyActiveOnIndex>Login</Link></li>
<li><Link activeClassName="active" to="/signup-main" onlyActiveOnIndex>Signup</Link></li>
</ul>
</div>
</nav>
</div>
)
}
}
// export Nav as default;
components/Home.js:
import React, { Component } from 'react';
export default class Home extends Component {
render() {
return (
<div>Homepage</div>
);
}
}
Why aren't these components showing up on the page?
Since your other routes are nested inside the route for 'Nav' component, it should render its children somewhere. For that, you have to put this.props.children where you want to render nested components in JSX of Nav component.
export default class Nav extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<div>
<nav className="navbar navbar-default">
<div className="container-fluid">
<div className="navbar-header navbar-brand">
Home
</div>
</div>
<div id="navbar" className="navbar-right">
<ul className="nav navbar-nav">
<li><Link activeClassName="active" to="/" onlyActiveOnIndex>Home</Link></li>
<li><Link activeClassName="active" to="/login" onlyActiveOnIndex>Login</Link></li>
<li><Link activeClassName="active" to="/signup-main" onlyActiveOnIndex>Signup</Link></li>
</ul>
</div>
</nav>
<div>{this.props.children}</div>
</div>
)
}
}

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