Why I am unable to see anything in the browser? - javascript

App.js
import React, {Component} from 'react';
import './App.css';
import About from './about';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';
class App extends Component {
render() {
return (
<Router>
<div className='App'>
<Route path="/abou" component={About} />
</div>
</Router>
);
}
}
export default App;
about.js
import React from 'react'
const about = () => {
return (
<div>about</div>
)
}
export default about
package.json
{
"name": "react-router",
"version": "0.1.0",
"private": true,
"dependencies": {
"#testing-library/jest-dom": "^5.16.2",
"#testing-library/react": "^12.1.3",
"#testing-library/user-event": "^13.5.0",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-router-dom": "^6.2.1",
"react-scripts": "5.0.0",
"web-vitals": "^2.1.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
Doubt???????????????????????????????????????????????????????????????????????????
I have installed react-router-dom as you can see in the package.json file but though it is compiling correctly, I am unable to see anything. What could be the error please let me know?

The component Route should be a child of the component Routes and in Route component you have to use the property element to specify the component to render instead of the property component.
import React, {Component} from 'react';
import './App.css';
import About from './About';
import Home from './Home';
import { BrowserRouter as Router, Route, Routes} from 'react-router-dom';
class App extends Component {
render() {
return (
<Router>
<div className='App'>
<Routes>
<Route path="/about" element={<About />} />
<Route path="/" element={<Home />} />
</Routes>
</div>
</Router>
);
}
}
export default App;
I noticed that you have confusion between react-router v5 and v6 (you are using v6)
So for more information about react-router v6 visit the official react-router documentation website : https://reactrouter.com/docs/en/v6

Related

React Component not recognized

I am building [this react tutorial][1] but get stuck at the beginning because my react components are not being recognized.
Here is my code:
import React from 'react';
import {BrowserRouter as Router, Route, Routes} from "react-router-dom";
import './App.scss';
import Header from "./components/Header/Header";
import Home from "./components/Home/Home";
import MovieDetails from "./components/MovieDetails/MovieDetails";
import Footer from "./components/Footer/Footer";
import PageNotFound from "./components/PageNotFound/PageNotFound";
function App() {
return (
<div className="app">
<Router>
<Header></Header>
<Routes>
<Route path="/" component= {Home} />
<Route path="/movie/:imdbID" component={MovieDetails}/>
<Route element={PageNotFound}/>
</Routes>
<Footer />
</Router>
</div>
);
}
export default App;
Basically, it recognizes the imported components but it does not display them in the correct yellow font color. Also, when I run the app only the footer and the header and footer are present. None of the routes work.
Here is the basic Home, Header, and footer component respectively.
import React from 'react'
const Home = () => {
console.log("hello");
return (
<div>Home</div>
)
}
export default Home;
import React from 'react'
const Header = () => {
return (
<div>Header</div>
)
}
export default Header
import React from 'react'
const Footer = () => {
return (
<div>Footer</div>
)
}
export default Footer
This is my package.json:
{
"name": "movie-app",
"version": "0.1.0",
"private": true,
"dependencies": {
"#reduxjs/toolkit": "^1.8.2",
"#testing-library/jest-dom": "^5.16.4",
"#testing-library/react": "^13.3.0",
"#testing-library/user-event": "^13.5.0",
"axios": "^0.27.2",
"node-sass": "^7.0.1",
"react": "^18.2.0",
"react-dom": "^18.2.0",
"react-redux": "^8.0.2",
"react-router-dom": "^6.3.0",
"react-scripts": "5.0.1",
"redux": "^4.2.0",
"web-vitals": "^2.1.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
Check your React router version, the tutorial seems to be old, and those are deprecated components. this may help
https://reactrouter.com/docs/en/v6/upgrading/v5
check your packag.json and chose the best method for the version you are using.

React router routers not showing

I can't seem to figure out why my router routes aren't rendering. I am in the very beginning of building my app so there isn't much code and I've tried several different methods and still nothing. I just have div's right now in the components i'm trying to route and the text inside isn't coming up - they were working when I had just the components in my App.js file before I tried routing them. Any ideas?
import React from 'react';
import './App.css';
import { BrowserRouter as Router, Routes, Route} from 'react-
router-dom'
import Main from './components/Main';
import AddUser from './components/AddUser';
import EditUser from './components/EditUser';
function App() {
return (
<div className="App">
<header className="App-header">
<h1>Home</h1>
</header>
<Router>
<Routes>
<Route exact path="/" component={Main} />
<Route path="/AddUser" component={AddUser} />
<Route path="/edit" component={EditUser} />
</Routes>
</Router>
</div>
);
}
export default App;
// My JSON file \
{
"name": "w15-crud",
"version": "0.1.0",
"private": true,
"dependencies": {
"#testing-library/jest-dom": "^5.16.4",
"#testing-library/react": "^13.2.0",
"#testing-library/user-event": "^13.5.0",
"bootstrap": "^5.1.3",
"react": "^18.1.0",
"react-dom": "^18.1.0",
"react-router": "^6.3.0",
"react-router-dom": "^6.3.0",
"react-scripts": "^2.1.3",
"reactstrap": "^9.0.2",
"web-vitals": "^2.1.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
The react-router-dom#6 Route component API changed. There is no longer a component prop for rendering routed components. Use the element prop and pass a ReactNode, a.k.a. JSX.
See Routes and Route
declare function Route(
props: RouteProps
): React.ReactElement | null;
interface RouteProps {
caseSensitive?: boolean;
children?: React.ReactNode;
element?: React.ReactNode | null;
index?: boolean;
path?: string;
}
Example:
<Router>
<Routes>
<Route path="/" element={<Main />} />
<Route path="/AddUser" element={<AddUser />} />
<Route path="/edit" element={<EditUser />} />
</Routes>
</Router>

Unable to upload taiwind CSS in React project

I am trying to use Tailwind CSS in the react project. I followed the steps given in the documentation from here. But after completing all the steps, I am unable to see the tailwind CSS changes.
I am adding the styles in the file Home.js like this,
import React from "react";
.
.
.
return (
<>
<div className="bg-red-500 h-96 py-80">
<h1 className="text-3xl font-bold underline bg-yellow-400">
Hello world!
</h1>
</div>
</>
);
};
export default Home;
But it is not showing anything
Following are the required files:
package.json
{
"name": "authlogin-boilerplate",
"version": "0.1.0",
"private": true,
"dependencies": {
"#testing-library/jest-dom": "^5.11.4",
"#testing-library/react": "^11.1.0",
"#testing-library/user-event": "^12.1.10",
"express": "^4.17.1",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-router-dom": "^6.1.1",
"react-scripts": "4.0.3",
"web-vitals": "^1.0.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
"devDependencies": {
"autoprefixer": "^10.4.2",
"postcss": "^8.4.5",
"tailwindcss": "^3.0.11"
}
}
tailwind.config.js
module.exports = {
content: [
"./src/**/*.{js,jsx,ts,tsx}",
],
theme: {
extend: {},
},
plugins: [],
}
App.js
import { useState } from "react";
import "./App.css";
import "./index.css";
import Navbar from "./components/Navbar";
import Home from "./components/Home";
import About from "./components/About";
import SignupPage from "./components/SignupPage";
import LoginPage from "./components/LoginPage";
import ForgotPasswordPage from "./components/ForgotPasswordPage";
import ChangePasswordPage from "./components/ChangePasswordPage";
import Alert from "./components/Alert";
import { BrowserRouter as Router, Routes, Route } from "react-router-dom";
function App() {
const [alert, setAlert] = useState(null);
const showAlert = (message, type) => {
setAlert({ msg: message, type: type });
setTimeout(() => setAlert(null), 1500);
};
return (
<>
<Router>
<Navbar showAlert={showAlert} />
<Alert alert={alert} />
<Routes>
<Route path="/" element={<Home showAlert={showAlert} />} />
.
.
</Router>
</>
);
}
export default App;
index.css
#tailwind base;
#tailwind components;
#tailwind utilities;
Also, my project structure is
On thing I noticed that in my index.css, I am getting this warning
I don't know the reason, I have restarted the laptop twice but not working.
This is not working because you haven't added the CRACO layer to your React app. Your setup is fine, but something is still to be added, you just need to run npm install #craco/craco inside your react app root and change your package.json file with the new value of start, build and eject command as shown below in the image, and finally start your server again this will work.

browser router not being exported from react router

I am tring to use the react router dom to make different pages so that it can go to different pages on click but the app does not compile since browser router is not being imported. I just copy pasted it straight from the website. Can someone tell me where the mistake is and how to fix it
App,js
import React from 'react';
import Header from './components/Header';
import Home from './components/Home';
import './App.css';
import { BrowserRouter as Router, Switch, Route, Link } from 'react-router'
import Detail from './components/Detail';
function App() {
return (
<div className='App'>
<Router>
<Header />
<Switch>
<Route path='detail'>
<Detail />
</Route>
<Route path='/'>
<Home />
</Route>
</Switch>
</Router>
<Home />
</div>
)
}
export default App;
package.json
{
"name": "disneyplus-clone",
"version": "0.1.0",
"private": true,
"dependencies": {
"#reduxjs/toolkit": "^1.6.2",
"#testing-library/jest-dom": "^4.2.4",
"#testing-library/react": "^9.5.0",
"#testing-library/user-event": "^7.2.1",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-redux": "^7.2.6",
"react-router-dom": "^6.1.0",
"react-scripts": "4.0.3",
"react-slick": "^0.28.1",
"slick-carousel": "^1.8.1",
"styled-components": "^5.3.3"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
You are using version 6 of react-router-dom and you don't have react-router specified in your package.json file.
Import the components from react-router-dom and convert to using the RRDv6 components. The Switch component was replaced by a Routes component that must wrap the Route components. The Route components also now render their routed components on the element prop as JSX.
import React from 'react';
import Header from './components/Header';
import Home from './components/Home';
import './App.css';
import { BrowserRouter as Router, Routes, Route, Link } from 'react-router-dom'
import Detail from './components/Detail';
function App() {
return (
<div className='App'>
<Router>
<Header />
<Routes>
<Route path='detail' element={<Detail />} />
<Route path='/' element={<Home />} />
</Routes>
</Router>
<Home />
</div>
)
}

React- Getting a white screen

I was trying to create a simple react app using create-react-app. I wanted to use react-router and test that I have the routing set up nicely. However, when I tried to run the app using npm start, I am just seeing a white screen and this really confused me as I cannot find a source for my error.
This is my package.json file.
{
"name": "blog",
"version": "0.1.0",
"private": true,
"dependencies": {
"#testing-library/jest-dom": "^4.2.4",
"#testing-library/react": "^9.5.0",
"#testing-library/user-event": "^7.2.1",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-router": "^5.2.0",
"react-router-dom": "^5.2.0",
"react-scripts": "3.4.3"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
My index.js
import React from "react";
import "./App.css";
import { BrowserRouter as Router, Route, Switch, Link } from "react-router-dom";
import Home from "./Components/Home";
import Error from "./Components/Error";
import Blog from "./Components/Blog";
//switch ensures the rendering of only one component
// Route tag are the links b/w the components and placed b/w switch tags
function App() {
return (
<Router>
<div className="App">
<ul>
<li>
<Link to="/">Home </Link>
</li>
<li>
<Link to="/blog">Blog </Link>
</li>
</ul>
<div>
<Switch>
<Route exact path="/" component={Home} />
<Route path="/blog" component={Blog} />
<Route component={Error} />
</Switch>
</div>
</div>
</Router>
);
}
export default App;
You need to put
ReactDOM.render(<App/>, document.getElementById('root'));
Somewhere to tell react inside which HTML element to put all the components

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