How to make script type both text/babel and module?

ghz 6months ago ⋅ 68 views

It works perfectly because I haven't included JSX, but when I replace the script type with text/babel, it doesn't work because the module fails to load. browser.js the Babel compiler.

Here... JSX works only when i replace script type with text/babel but the problem is module fails to load since the script is not module. Any idea how make it work with JSX?

<div id="root">

</div>
<script type="module">
    import  './react.min.js';
    import  './react-dom.min.js';
    import  './browser.js';
    class Hello extends React.Component {
        render() {
            return React.createElement('div', null, `Hello ${this.props.toWhat}`);
        }
    }
    ReactDOM.render(
        React.createElement(Hello, {toWhat: 'World'}, null),
        document.getElementById('root')
    );
</script>

Answers

To make JSX work in your HTML file without using text/babel, you'll need to precompile your JSX code into regular JavaScript using Babel before including it in your script tag. Here's how you can achieve that:

Step-by-Step Approach:

  1. Install Babel CLI and Presets: First, make sure you have Babel CLI installed globally or locally in your project along with the necessary presets for compiling JSX.

    npm install --save-dev @babel/core @babel/cli @babel/preset-react

  2. Create a .babelrc Configuration File: Create a .babelrc file in the root of your project (or configure in package.json) with the presets needed for compiling JSX.

    {
  "presets": ["@babel/preset-react"]
}

  3. Compile JSX to JavaScript: Use Babel CLI to compile your JSX file into a JavaScript file that can be directly used in your HTML.

    npx babel your-script.jsx --out-file your-script.js

    This command compiles your-script.jsx (containing your JSX code) into your-script.js.

  4. Modify Your HTML: Update your HTML file to include the compiled JavaScript file instead of the JSX directly.

    <div id="root"></div>
<script src="path/to/your-script.js"></script>

Example JSX to JavaScript Compilation

Assuming your JSX code is in your-script.jsx, here’s how you compile it using Babel:

  1. Create your-script.jsx:

    import React from 'react';
import ReactDOM from 'react-dom';

class Hello extends React.Component {
  render() {
    return React.createElement('div', null, `Hello ${this.props.toWhat}`);
  }
}

ReactDOM.render(
  React.createElement(Hello, { toWhat: 'World' }, null),
  document.getElementById('root')
);

  2. Compile your-script.jsx to your-script.js:

    npx babel your-script.jsx --out-file your-script.js

  3. Update your HTML:

    <div id="root"></div>
<script src="your-script.js"></script>

Explanation

  • Babel: Babel is a JavaScript compiler that transforms JSX syntax into regular JavaScript that browsers can understand.
  • @babel/preset-react: Preset for Babel that includes plugins necessary for handling React's JSX syntax.
  • Compilation: By compiling JSX to JavaScript beforehand, you avoid the need for text/babel in the script type, allowing your HTML to work with standard script loading (type="module" or type="text/javascript").

This approach ensures compatibility with different browsers and avoids relying on text/babel, which is primarily intended for development environments or online compilers rather than production use due to its runtime compilation overhead.

#javascript