I got a simple react component added to a web page and it is not rendering every time. It comes after I clear my browser history and then if I refresh my page it is not rendered. am I using old cdns or Babel?
This is my component and HTML.
React file find_new.js
'use strict';
class FindNew extends React.Component {
render() {
return (
<div>
<li className="list-inline-item">
<select className="selectpicker show-tick">
<option>Newly published</option>
<option>Recent</option>
<option>Old Review</option>
</select>
</li>
</div>
);
}
}
const domContainer = document.querySelector('#find_new');
ReactDOM.render(<FindNew/>, domContainer);
HTML
<div id="find_new"></div>
<script src="https://unpkg.com/react#16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js" crossorigin></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"></script>
<script type="text/babel" src="reactme/find_new.js"></script>
Related
const root = ReactDOM.createRoot(document.getElementById('root'));
const element = <h1>Hello, 1234world</h1>;
root.render(element);
const root2 = ReactDOM.createRoot(document.getElementById('tworoot'));
const element2 = <h1>Hello, 5678world</h1>;
root2.render(element2);
function MyButton() {
return (
<button>
I'm a button
</button>
);
}
export default function MyApp() {
return (
<div>
<h1>Welcome to my app</h1>
<MyButton />
</div>
);
}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Add React in One Minute</title>
</head>
<body>
<h2>Add React in One Minute</h2>
<p>This page demonstrates using React with no build tooling.</p>
<p>React is loaded as a script tag.</p>
<!-- We will put our React component inside this div. -->
<div id="root"></div>
<div id="tworoot"></div>
<!-- Load React. -->
<!-- Note: when 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 src="lik.js"></script>
</body>
</html>
Upon rendering my html page,I am getting console log error as Uncaught SyntaxError: Unexpected token 'export' and my Button is not being displayed.button.please advise me as I think I am nt getting the concepts right
In order to render the Button, you have to render the component referencing it, in this case, MyApp.
const root = ReactDOM.createRoot(document.getElementById('root'));
const element = <h1>Hello, 1234world</h1>;
root.render(element);
const root2 = ReactDOM.createRoot(document.getElementById('tworoot'));
const element2 = <MyApp />;
root2.render(element2);
I made two apps one is for angularjs and one is to react. Now the problem is I include the react build in angularjs app and try to initialize the '' component but when I run the code it says Test is not defined.
Can someone help me with this or give me any idea how I can get out of this problem.
React Component:
import React from 'react';
import ReactDOM from 'react-dom';
class Test extends React.Component {
render() {
return (
<div>
Hello
</div>
);
}
}
angular Js Code:
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body ng-app="angular-app">
<div id="root"></div>
<script src="https://unpkg.com/babel-standalone#6/babel.min.js"></script>
<script src="https://unpkg.com/react#16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js" crossorigin></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.1/angular.min.js"></script>
<script src="react/dist/build.js"></script>
<script>
ReactDOM.render(<Test/>, document.getElementById('root'));
</script>
</body>
</html>
You should write the following code in your react app and then load your bundle file in angularJS app.
ReactDOM.render(<Test/>, document.getElementById('root'));
Thing is, you cannot use jsx inside browser, jsx is usually transpiled using Babel into JavaScript function calls.
So 1. <Test /> will never work inside browser, you need to Babel that.
You need to expose react to you angularjs, best way I can think of is
// In react, instead of exporting component, export a function that mount component in given HTML
Export default (elm) => ReactDOM.render(<Test/>, elm)
from this ressource https://reactjs.org/docs/add-react-to-a-website.html I have integrate into my static website a basic component
<body>
<div id="like_button_container"></div>
<!-- Load React. -->
<!-- Note: when deploying, replace "development.js" with "production.min.js". -->
<script src="https://unpkg.com/react#16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js" crossorigin></script>
<script src="https://unpkg.com/react-content-loader#3.4.1/dist/react-content-loader.min.js" crossorigin></script>
<!-- Load our React component. -->
<script src="like_button.js"></script>
</body>
</html>
like_button.js :
'use strict';
class LikeButton extends React.Component {
constructor(props) {
super(props);
this.state = { liked: false };
}
render() {
if (this.state.liked) {
return 'You liked this.';
}
return (
<div>
<button onClick={() => this.setState({ liked: true }) }>
Like
</button>
<Facebook /> ???????????
</div>
);
}
}
let domContainer = document.querySelector('#like_button_container');
ReactDOM.render(<LikeButton />, domContainer);
How to use in this component an external module like https://www.npmjs.com/package/react-content-loader ?
I tried to add script https://unpkg.com/react-content-loader#3.4.1/dist/react-content-loader.min.js into html page with import satement in my component but I have an error "Uncaught ReferenceError: Facebook is not defined"
I never tried the code in Add React to a Website chapter of the React documentation. It was a good time to tinker with it.
There are more than one potential problem with your attached code. You do not load Babel in your index.html. At least in the question. So you could not use jsx syntax in the like_button.js.
The second one is that you could not use import here. You have to find what is the namespace of the package. I logged out the window object, checked that and it is ContentLoader.
The rest is easy I created a standalone index.html with babel:
https://codesandbox.io/s/w27pjmq355
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Hello React!</title>
<script src="https://unpkg.com/react#16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js"></script>
<script
src="https://unpkg.com/react-content-loader#3.4.1/dist/react-content-loader.min.js"
crossorigin
></script>
<script src="https://unpkg.com/babel-standalone#6.26.0/babel.js"></script>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
console.log('window', window);
class App extends React.Component {
render() {
return (
<div>
<h1>Hello world!</h1>
<ContentLoader.Facebook />
</div>
);
}
}
ReactDOM.render(<App />, document.getElementById('root'));
</script>
</body>
</html>
I think you could try out React this way, but Babel usage is not recommended like this in production. I strongly recommend to install node and use create-react-app. This way you can use the whole toolchain in no time.
Or event create a new React sandbox on CodeSandbox.io
see I am new in react.js and include react and react dom ...but here, I am including cdn but the error will come with the console.kindly help me.
<html>
<head>
<script src="https://unpkg.com/react#0.14.7/dist/react.js">
</script>
<script src="https://unpkg.com/react-dom#0.14.7/dist/react-
dom.js">
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-
core/5.8.23/browser.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
let HocCompont= (BasicComponent) => class extends
react.Component {
render(){
return(
<div className="abc"> <BasicComponent/> </div>
)
}
}
const StatelessCoponent = () =>{
return( <button>I am button</button>
)
}
let ExtendedButton = HocCompont(StatelessCoponent);
ReactDOM.render(<ExtendedButton/>,document.getElementById("app"));
</script>
</body>
</html>
JSX code:
var App = React.createClass({
render: function() {
return <div className="darken">hello world</div>
}
});
React.renderComponent(<App/>, document.querySelector('.main'))
HTML:
<body>
<header>welcome</header>
<div class="main"></div>
</body>
React.renderComponent will append rendered JSX to <div class="main">. Output of HTML will be:
<body>
<header>welcome</header>
<div class="main">
<div class="darken">hello world</div>
</div>
</body>
Is it possible React.renderComponent replace <div class="main">, so what I expect like this:
<body>
<header>welcome</header>
<div class="darken">hello world</div>
</body>
Was having a problem getting my component to render in React 0.14.0. My solution was make sure your scripts have a special type:
<script type="text/babel" src='js/app.js'></script>
Include these three libraries:
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.0/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.0/react-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"></script>
Then use ReactDOM.render():
ReactDOM.render(<Timer start={Date.now()} />, document.getElementById('app'));
I'm not even using ES6 or a build system. Simple solution to get text on the screen with react.js
Sure, just use:
React.render(<App/>, document.body);
Had a similar problem and this is what I came up with.
Replace it with a simple span tag so it doesn't affect your styling.
const appContainer = document.createElement('span')
const mainEl = document.querySelector('.main')
mainEl.parentNode.replaceChild(appContainer, mainEl)
React.renderComponent(<App/>, mainEl)
Which will produce
<body>
<header>welcome</header>
<span> <!-- this acts as the container for react -->
<div class="darken">hello world</div>
</span>
</body>