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Multiple React components on a single HTML page
<!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>
<p>
This is the first comment.
<!-- We will put our React component inside this div. -->
<div class="like_button_container" data-commentid="1"></div>
</p>
<p>
This is the second comment.
<!-- We will put our React component inside this div. -->
<div class="like_button_container" data-commentid="2"></div>
</p>
<p>
This is the third comment.
<!-- We will put our React component inside this div. -->
<div class="like_button_container" data-commentid="3"></div>
</p>
<!-- 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 our React component. -->
<script src="like_button.js"></script>
</body>
</html>
'use strict';
const e = React.createElement;
class LikeButton extends React.Component {
constructor(props) {
super(props);
this.state = { liked: false };
}
render() {
if (this.state.liked) {
return 'You liked comment number ' + this.props.commentID;
}
return e(
'button',
{ onClick: () => this.setState({ liked: true }) },
'Like'
);
}
}
// Find all DOM containers, and render Like buttons into them.
document.querySelectorAll('.like_button_container')
.forEach(domContainer => {
// Read the comment ID from a data-* attribute.
const commentID = parseInt(domContainer.dataset.commentid, 10);
const root = ReactDOM.createRoot(domContainer);
root.render(
e(LikeButton, { commentID: commentID })
);
});
@iamshacky
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iamshacky commented Nov 27, 2021 via email

@Mr-Mesut-OZTURK
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Mr-Mesut-OZTURK commented Dec 14, 2021

Thank you very much 💯
I think JSX is more understandable for me!

@fabiamcunha
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achei um pouco complexo com o CDN .

@shirgans
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shirgans commented Feb 8, 2022

I'm getting "You liked comment number undefined"
only on the first button. When I click #2 or #3 it works well.

Even if I switch between #2 and #1, and click #2 (which is now the first in the list) - I get the same "undefined" message.
Any clue why?

@abelstam12
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Using this approach, how do you import local components and how do you import thrird party components (charka ui components for example)

@steven-barkley
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thanks for the simple to follow and helpful reuse of the previous DOC code.

@josue-fdev
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Question: on line 26 you have domContainer but should that be declared in line 25 or is your way correct and I need to learn something? Any help would be appreciated. Thanks

I wondered the same. Following the docu it should be declared as a root container for each element attributes rendering... but ReactDom is being used as a root container. So, for each element ( being domContainer), render the attribute ( commentID).

It seems to be a different way when elements are outside of the components.

@josue-fdev
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I'm getting "You liked comment number undefined" only on the first button. When I click #2 or #3 it works well.

Even if I switch between #2 and #1, and click #2 (which is now the first in the list) - I get the same "undefined" message. Any clue why?

Does the first dataset is correctly?

@evatitan
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pretty nice!

@Ashik-Sarker
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Button does not show on my screen

@Piggyback13
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< нормал >

хорош

@eganproject
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amazing

@christian-go3
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Cool!

@Chrissiku
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Amazing

@Meet-7777
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Can we use functions instead of classes to load components?

@lxxxxx-oss
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帅的呀~

@AndyIsAMan
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Thanks very much!

@AndyIsAMan
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AndyIsAMan commented Aug 28, 2022

root.render(e(LikeButton)); this line i am not understand

@RicoShen
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RicoShen commented Sep 7, 2022

root.render(e(LikeButton)); this line i am not understand

@wuddy233
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谢谢你

@creativoloco
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I had no idea it was possible to have as many root elements as you want. Could be considered as bad practice? Does it matter?

@MahdiSohaily
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It seems to be great.

@DarrenSem
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root.render(e(LikeButton)); this line i am not understand

Read the .js file that sets alias "e" to "React.createElement"

@0rigin-c0de
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awesome

@cc-ww
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cc-ww commented Feb 6, 2023

so niubility

@ckalaimani
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in the return statement if add html tags I am getting syntax errors

@ckalaimani
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can you please show an example with tags rendered with latest functions tags

@RobertRodes
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root.render(e(LikeButton)); this line i am not understand

Same as root.render(React.createElement(LikeButton));. Because of the earlier const e = React.createElement.

@clovis739
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hi,
thank you

@ryoalstarsoft
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It's very helpful to understand React advantage.

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