import { useState } from 'react';
const root10 = ReactDOM.createRoot(document.getElementById('Xy'));
const element10 = <Pile />;
root10.render(element10);
function Pile() {
return (
<img
src="https://i.imgur.com/QIrZWGIs.jpg"
alt="Alan L. Hart"
/>
);
}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Test Page-React</title>
</head>
<body>
<link rel="icon" type="./x-icon" href="./favicon.ico">
<h3>https://beta.reactjs.org/learn/describing-the-ui</h3>
<h4>https://transform.tools/html-to-jsx</h4>
<h5>https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules</h5>
<div id="Xy"></div>
<!-- Load React. -->
<!-- Note: if deploying, replace "development.js" with "production.min.js". -->
<script src="https://unpkg.com/react#18/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#18/umd/react-dom.development.js" crossorigin></script>
<!-- Load your React component. -->
<script type="module" src="test.js"></script>
</body>
</html>
I am learning from the official react guide...I entered the code import { useState } from 'react'; on top of my js file..and jsx preprocessing is sucess but rendering in chrome is giving me console log as :
Uncaught TypeError: Failed to resolve module specifier "react". Relative references must start with either "/", "./", or "../".
Note:chrome rendering without the import { useState } from 'react'; works fine.
Babel versionn: 6.26.0 (babel-core 6.26.3) is installed as per react official install guide: npm install babel-cli#6 babel-preset-react-app#3
Related
I've started to learn React lately and today to just memorize what i've learnt i decided to create a react component that contains a simple heading tag but i can't figure out why it won't be displayed in the browser here's my code
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
</div>
<script crossorigin src="https://unpkg.com/react#18/umd/react.development.js"></script>
<script crossorigin src="https://unpkg.com/react-dom#18/umd/react-dom.development.js"></script>
<script src="include-component.js" ></script>
</body>
</html>
and this is my react component which resides in file named include-component.js :
import React from "react";
import ReactDOM from "react-dom";
function IncludeComponent() {
return(
<TestComponent name="Hello Wolrd"/>
);
}
function TestComponent(props) {
return(
<h1>{props.name}</h1>
);
}
const app= document.getElementById('app');
ReactDOM.render(<IncludeComponent/>,app);
can someone tell me why my component won't render ?
You are using a confusing mixture of non-compiled code and compiled code. Did you checked your console? You surely have errors guiding you...
This is for when you don't have a compiler and React and ReactDOM will be available globally:
<script crossorigin src="https://unpkg.com/react#18/umd/react.development.js"></script>
<script crossorigin src="https://unpkg.com/react-dom#18/umd/react-dom.development.js"></script>
I don't recommend you try this approach. It is sub optimal and none of the resources you will see online are using it.
Then you do this:
<script src="include-component.js"></script>
This will already cause an exception since you're using import statements inside this JS file, but you haven't said that it type="module". Normal JS files can't use import statements.
Finally you can't import React and ReactDOM like that anyway, since you imported the browser versions which just have global variables.
Instead just start a project with Create React App:
npx create-react-app my-app
cd my-app
yarn start
And start experimenting in that instead.
For completeness you would need to transform with babel:
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
</div>
<script src="https://unpkg.com/react/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/#babel/standalone/babel.js"></script>
<script type="text/babel">
function IncludeComponent() {
return(
<TestComponent name="Hello Wolrd"/>
);
}
function TestComponent(props) {
return(
<h1>{props.name}</h1>
);
}
const container = document.getElementById('app');
const root = ReactDOM.createRoot(app);
root.render(<IncludeComponent/>);
</script>
</body>
</html>
You must import the test component!!
import TestComponent from './TestComponent';
function App() {
return (
<div className="App">
<TestComponent name='hello world' />
</div>
);
}
export default App;
I'm a project and that project have a "bootstrap" own, and i would want to import it for my render.
I created an archive HTML with the scripts:
<html>
<head>
<script> //1.www.s81c.com/common/v18/css/www.css</script>
<script> //1.www.s81c.com/common/stats/ida_stats.js</script>
<script> //1.www.s81c.com/common/v18/js/www.js</script>
</head>
</html>
and imported in my App.js:
import React, { Component } from 'react';
import logo from './logo.svg';
import './App.css';
***import './V18.html'***;
class App extends Component {
render() {
return (
<div className="App">
<header className="App-header">
<img src={logo} className="App-logo" alt="logo" />
<h1 class="nameOfClassImported" className="App-title">BEM VINDX</h1>
</header>
To get started, edit <code>src/App.js</code> and save to reload.
</div>
);
}
}
export default App;
but given that error:
> Failed to compile.
./src/V18.html
Module parse failed: Unexpected token (1:0)
You may need an appropriate loader to handle this file type.
| <html>
| <head>
| <script> //1.www.s81c.com/common/v18/css/www.css</script>
Resume:
I want to import scripts for i to use in my App.js
I think the tag for the .css file should be <link>.
There are multiple ways to import external scripts. One way that does work is to move these scripts to the <head> of your public/index.html.
/// public/index.html ///
<html>
<head>
<script src="//1.www.s81c.com/common/stats/ida_stats.js"></script>
<link href="//1.www.s81c.com/common/v18/css/www.css" rel="stylesheet">
<script src="//1.www.s81c.com/common/v18/js/www.js"></script>
/// rest of public/index.html ///
Those scripts will be downloaded when your page loads and you can access the variables in those scripts on the window object. After linking to these from your public/index.html, restart your React app, then open the console with F12 or Command-Option-i and type window into the console. There you will see all the global functions that are available from within your React app including window.IBMCore, window.Modernizr, etc
Have you tried this?
<script type='text/javascript' src='..//1.www.s81c.com/common/stats/ida_stats.js'></script>
and for following can you try a regular <link /> instead of <script>
import those in index.html path is public.index.html. Because your app put in one of div of same html page.
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
Read this how webpack work.
https://webpack.js.org/configuration/externals/
else other way is save file and import at App.js
import './App.scss';
I am trying to include cdn link for my react js app. What would be the link to include material ui.
http://www.material-ui.com/#/
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>First React App</title>
<script crossorigin src="https://unpkg.com/react#16/umd/react.development.js"></script>
<script crossorigin src="https://unpkg.com/react-dom#16/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone#6.15.0/babel.min.js"></script>
</head>
<body>
<div id="container" style="font-style: italic;"></div>
<script type="text/babel">
var destination = document.querySelector("#container");
ReactDOM.render(
<h1>My First App</h1>,
destination);
</script>
</body>
</html>
The way to include material ui is through npm rather than a CDN link like traditional Frontend frameworks or libraries.
The correct way to to do it is through npm packages.
You install the library by running
npm install material-ui
Then you can use it inside your react component as below
import React from 'react';
import ReactDOM from 'react-dom';
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
import MyAwesomeReactComponent from './MyAwesomeReactComponent';
const App = () => (
<MuiThemeProvider>
<MyAwesomeReactComponent />
</MuiThemeProvider>
);
ReactDOM.render(
<App />,
document.getElementById('app')
);
You can read more about it here http://www.material-ui.com/#/get-started/installation
I have a simple React App that I'm trying to load through using a CDN vs NPM.
My options.html file:
<!DOCTYPE html>
<html>
<head>
<title>My Test Extension Options</title>
<script src="https://fb...me/react-0.14.3.js"></script>
<script src="https://fb...me/react-dom-0.14.2.js"></script>
</head>
<body>
<div id="root"></div>
<script src="index.js" type="text/babel"></script>
</body>
</html>
index.js
import React, { Component } from 'react'
import ReactDOM from 'react-dom';
class App extends Component {
render() {
return (
<div>Hello world</div>
)
}
}
ReactDOM.render(<App />, document.getElementById('root'))
When I load up options.html in a browser, nothing is showing up when I expected to see Hello world. I checked the debugger and no errors are coming up.
What am I doing wrong?
I believe :
There is no need of type="text/babel"
<script src="index.js" type="text/babel"></script>
so it should be
<script src="index.js" ></script>
I'm trying to render a small search bar onto my website, but what I see is that it is still existing in the website, but its size becomes 0x0, and I can't find anything wrong with my ES6 code. Can someone debug for me please?
index.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/style/style.css">
<!-- <script src="https://maps.googleapis.com/maps/api/js"></script> -->
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous">
<title>React-Redux-Learning</title>
</head>
<body>
<div id="container"></div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!-- Latest compiled and minified Bootstrap JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
</body>
<script src="/bundle.js"></script>
</html>
index.js:
import React from 'react'
import ReactDOM from 'react-dom'
import searchBar from './components/searchBar'
const youtubeAPIKey = '...'
const App = () => {
return (
<div>
<searchBar />
</div>
)
}
ReactDOM.render(<App />, document.getElementById('container'))
searchBar.js:
import React, { Component } from 'react'
class searchBar extends Component {
constructor(props) {
super(props)
this.state = {term: ''}
}
render() {
return <input onChange={event => console.log(event.target.value)}/>
}
}
export default searchBar
First of, you have defined your component as <searchBar\>. I guess React is not able to see it as JSX Component and is embedding it as a plain html tag instead, as evidenced by the <searchbar\> tag seen in Elements tab of chrome.
I think what you need is, to figure out why react is not able see searchBar as a JSX component. I hope this leads you to the right direction.
OK my boss actually found it out, it's the problem about CAPITALIZING the variable names. After I cap the first letter of the variable names things are working again...
Your search bar code works fine. Check your CSS to make sure that your body has a size.