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Last active August 2, 2024 18:06
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Multiple React components on a single HTML page
Raw
index.html
<!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>
Raw
like_button.js
'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 })
);
});
@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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