I'm trying to build a portfolio website in React ,i'm very new to React (about 3 days), and i have imported some code for the website nav bar and declared it in the code but it doesn't show up on the website and vscode says that the value was not declared. How do i fix this?
I've tried turning the code into a component and rearranging the code but i still get the same result.
App.js - main code
import React from 'react';
import './App.css';
import navBar from './navBar/navBar';
function App() {
return (
<div className="app">
//navBar that won't show up
<navBar />
<div className="landingPage"></div>
<div className="projectPage"></div>
<div className="aboutPage"></div>
<div className="footer"></div>
</div>
)
}
export default App;
Code for the navBar
import React from "react";
import "./navBar.css";
function navBar() {
return (
<div>
<h1>NAVBAR PLACEHOLDER</h1>
</div>
)
}
export default navBar;
Your question title is little bit wierd. You have fixed the value error in your code. But you still have error with the component:
//navBar that won't show up
<navBar />
In react custom built components name should always start with capital letter. So do this:
import NavBar from './navBar/navBar';
// -- ^^ you can name it anything as it's default import
<NavBar />
Related
I am importing a component, but it does not render. The component is capitalized. I think there is something wrong with the import statement because when I remove it and replace with "Navbar", it renders, but if i keep the import then it does not render.
import styles from "./style";
import { Billing, Business, CardDeal, Clients, CTA, Footer, Navbar, Stats, Testimonials, Hero }
from "./components";
const App = () => { return (
<div className="bg-primary w-full overflow-hidden">
<div className={`${styles.paddingX} ${styles.flexCenter}`}>
<div className={`${styles.boxWidth}`}>
<Navbar />
</div>
</div>
</div>
);
};
export default App;
import React from 'react';
const Navbar = () => {
return (
<div>Navbar</div>
);
};
export default Navbar;
import Navbar from "./Navbar";
import Billing from "./Billing";
import CardDeal from "./CardDeal";
import Business from "./Business";
import Clients from "./Clients";
import CTA from "./CTA";
import Stats from "./Stats";
import Footer from "./Footer";
import Testimonials from "./Testimonials";
import Hero from "./Hero";
export {
Navbar,
Billing,
CardDeal,
Business,
Clients,
CTA,
Stats,
Footer,
Testimonials,
Hero,
};
If i exchange the component
for basic text like "Navbar" or "Navbar" it does not render either. These 2 display when I remove the import components statement.
When i control click , it brings me to the correct Navbar component.
I am following a yt tutorial
https://github.com/adrianhajdin/project_hoobank
my repo is here: https://github.com/lukasmckaine22/userbet_landing_page
I made sure the component was capitalized. I confirmed the component actually leads to the correct component by control clicking it. I confirmed the code renders plain text only when the import is removed. I confirmed the import leads to the correct file by control clicking. I tried only importing the Navbar with and without brackets. I changed the import directory to pull the navbar directory.
I'm a beginner who's trying to make a simple website using React JS.
Here's my App.js file and the other component which is not rendering.
All the other components are rendering fine,Except for the one which I've provided code for(homePageProducts.js).
App.js
import './App.css';
import Header from './Components/Header';
import Footer from './Components/Footer';
import CarouselContainer from './Components/Carousel/CarouselContainer';
import homePageProducts from './Components/homePageProducts/homePageProducts';
import 'bootstrap/dist/css/bootstrap.min.css';
function App() {
return (
<div>
<Header></Header>
<CarouselContainer></CarouselContainer>
<homePageProducts></homePageProducts>
<Footer></Footer>
</div>
);
}
export default App;
homePageProducts.js
import React from 'react';
function homePageProducts()
{
return(
<div>
<p>Good morning</p>
</div>
);
}
export default homePageProducts;
PS I was just testing around with this component, Hence the simple code.
I've checked twice and I'm sure that I've imported homePageProducts.js correctly
If you meant to render a React component, start its name with an uppercase letter.
import HomePageProducts from './Components/homePageProducts/homePageProducts';
and render it
<HomePageProducts/>
make sure you have imported it correctly import homePageProducts from './Components/homePageProducts/homePageProducts'
i am trying to make my first project on React, but i am facing some issues with it. My imported react-router-dom libraries are not being used on LINK.
I do get an error: 'Link' is declared but its value is never read. Thank you in advance!
import React, {useState} from 'react';
import { Link } from 'react-router-dom';
function Navbar() {
return (
<>
<nav className="navbar">
<div className="navbar-container">
<LINK to="/" className="navbar-logo">
//TRVL <i className='fab fa-typo3'/>
</LINK>
</div>
</nav>
</>
)
}
export default Navbar
The error occurs because you are declaring Link in the import statement and then trying to use LINK in code. Link != LINK, the case should match.
My biggest problem is that I have not been able to get my react app to display since the first week of the course's assignment. I am at the end of the second week, and have been dealing with this second assignment for several weeks since the course is online through coursera.org.
I have gone over the assignment from week one and watched the videos over and over again, and made many revisions after googling a lot of the answers to the correct code. I have also gone through the resources of week one that the course offers.
I posted numerous times on week one's discussion board and follow the suggestions given. I still was not able to get the react app to display, so I moved one the week 2 assignment, and continued working on it.
After more than two weeks of a lot of trial and error and following the error prompts from the visual studio which is the one I am using for this course, I finally started to get some input on what errors I needed to fix on the editor through the cmd window. Every time I make corrections and run yarn start again, the app started to let me know what I needed to fix on the code. The following image is the last error that I got. Any suggestions are greatly appreciated.
This is the code of the functional component that is giving me the error.
import React from 'react';
import { Card, CardImg, CardImgOverlay, CardTitle, Breadcrumb, BreadcrumbItem } from 'reactstrap';
import {Link } from 'react-router-dom';
import { DishDetail } from 'reactstrap';
import { Menu } from 'reactstrap';
function RenderMenuItem ({dish, onClick}) {
return(
<card>
<Link to={`/menu/${dish.id}`} >
<cardImg width = "100%" src ={dish.image} alt={dish.name} />
<cardImgOverlay>
<cardTitle>
{dish.name}
</cardTitle>
</cardImgOverlay>
</Link>
</card>
);
}
function Millie (props) {
const menu = props.dishes.map((dish)=>{
return(
<div key={dish.id} className="col-12 col-md-5 m-1">
<RenderMenuItem dish={dish} />
</div>
);
});
}
return(
<div className="container">
<div className="row">
<Breadcrumb>
<BreadcrumbItem><Link to="/home">Home</Link></BreadcrumbItem>
<BreadcrumbItem active>Menu</BreadcrumbItem>
</Breadcrumb>
<div className="col-12">
<h3>Menu</h3>
<hr />
</div>
</div>
<div className="row">
{menu}
</div>
</div>
);
export default function Menu(){
}
Almost all if code has been provided by professor.
Error page from React App
Any suggestions are greatly appreciated!
ty
Mildred
As the error says, you're trying to declare something called "Menu" when something called "Menu" already exists.
import { Menu } from 'reactstrap';
export default function Menu(){
}
Either rename the Menu function component or rename the imported one:
// either rename this on import
import { Menu as ReactStrapMenu } from 'reactstrap';
// or call your Menu component something else
export default function MyMenu () {
}
As Chris points out in the comment below, it seems likely that you don't intend to export the empty Menu function at the bottom at all, and perhaps meant to export your Millie component? In that case, just replace the default export at the end with:
export default Millie;
Or export it in the same place you're defining it:
export default function Millie (props) {
const menu = props.dishes.map((dish)=>{
// etc.
}
Mildred! Nice that you're practicing, courses are awesome to learn the basics.
As described in the error you provided, "Menu" is declared twice. If you check the code snippet, you can see that you imported "Menu" from a library, but also declared a function called "Menu".
That is where that error comes from. Just change your default function to any other name, such as "MyMenu"
Essentially, I want to generate a QR Code in a ReactJS application. I found a generator on npm for React & React Native. Here is how they set it up on the npm site:
import React from "react";
import ReactDOM from "react-dom";
import QRCode from "react-qr-code";
ReactDOM.render(<QRCode value="hey" />, document.getElementById("Container"));
Here is how I set up the page that will hold the QR Code:
import React from "react";
import ReactDOM from "react-dom";
import QRCode from "react-qr-code";
// empty profile page
class Profile extends React.Component
{
render()
{
return (
<div>
<h1>QR Code Page</h1>
</div>
);
}
}
//ReactDOM.render(<QRCode value="hey" />, document.getElementById("Container"));
export default Profile;
I have the actual QRCode code commented out, as I'm not sure where to put it in the code so that it works & shows up on the page. When I put it anywhere inside the Profile class the line has red underlines stating that a ";" or ")" is expected (depending on where it's put I get ";" or ")"). I know I'm not missing either, so I'm pretty sure it comes down to where I'm putting the line of code to generate the QRCode.
I'm sorry if this is is an obvious question, I'm still pretty new to React.
Please let me know if you need any more information!
You can just use the <QRCode value="hey"></QRCode>. You also don't need dom library for this. So I've removed it.
import React from "react";
import QRCode from "react-qr-code";
// empty profile page
class Profile extends React.Component
{
render()
{
return (
<div>
<h1>QR Code Page</h1>
<QRCode value="hey"></QRCode>
</div>
);
}
}
export default Profile;
Check out this live version to see it in action
https://codesandbox.io/s/billowing-butterfly-0dr39?file=/src/App.js
you can use it return itself it will work
return (
<div>
<h1>QR Code Page</h1>
<QRCode value="hey" />
</div>)
Try this.
import React from "react";
import QRCode from "react-qr-code";
// empty profile page
class Profile extends React.Component {
render() {
return (
<div>
<h1>QR Code Page</h1>
<QRCode value="hey" />
</div>
);
}
}
export default Profile;