Vite creates Vue3 projects and how Vue3 uses jsx

Vite creates a Vue3 project

Vite requires Node.js version >= 12.0.0. (node -v Check your current node version)

• Use yarn: yarn create @vitejs/app

• Use npm: npm init @vitejs/app

1. Enter the project name

Enter us here Project name: vite-vue3

2. Select the framework

Here select the framework we need to integrate: vue

• vanilla: native js, without any framework integration

• vue: vue3 framework, Only supports vue3

• react: react framework

• preact: lightweight react framework

• lit -element: lightweight web component

• svelte: svelte framework

3. Choose a different vue

Here we Select: vue

4. Project creation completed

5. Project structure

The project structure is very simple:

6. Start the project

• Enter the project:cd vite-vue3

• Install dependencies: npm install

• ##Run the project:

  npm run dev Or npx vite

##Compile project:
• npm run build

  or npx vite build

Startup speed

Extremely fast

:

##Using jsx in Vue3

jsx cannot be used directly in the Vue3 project created by Vite. You need to introduce a plug-in to achieve it

1. Install the plug-in

Use yarn:

yarn add @vitejs /plugin-vue-jsx -D

• Use npm:
npm i @vitejs/plugin-vue-jsx -D

• 2. Register the plug-in

vite.config.js:

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import vueJsx from "@vitejs/plugin-vue-jsx";

// https://vitejs.dev/config/
export default defineConfig({
    plugins: [vue(), vueJsx()]
})

3. Use the plug-in

Method 1: Modify

App. vue

Without jsx, App.vue

looks like this:

<script setup>
import HelloWorld from &#39;./components/HelloWorld.vue&#39;;
</script>

<template>
    <img alt="Vue logo" src="./assets/logo.png" />
    <HelloWorld msg="Hello Vue 3 + Vite" />
</template>

Using jsx, App.vue looks like this:

<script lang="jsx">
import { defineComponent } from &#39;vue&#39;;
import HelloWorld from &#39;./components/HelloWorld.vue&#39;;
import logo from &#39;./assets/logo.png&#39;;

export default defineComponent({
    render: () => (
        <div>
            <img alt="Vue logo" src={logo} />
            <HelloWorld msg="Hello Vue 3 + Vite" />
        </div>
    ),
});
</script>

Method 2: Delete App.vue and create a new App.jsx

Create a new App.jsx file

import { defineComponent } from 'vue';
import HelloWorld from './components/HelloWorld.vue';
import logo from './assets/logo.png';

export default defineComponent({
    setup () {
        return () => {
            return (
                <div>
                    <img alt="Vue logo" src={logo} />
                    <HelloWorld msg="Hello Vue 3 + Vite" />
                </div>
            )
        }
    }
});

Modify the introduction of main.js

import App from './App.vue' changed to import App from './App'

import { createApp } from 'vue'
import App from './App'

createApp(App).mount('#app')

Note

Does not support eslint when saving, do eslint Verification

• Different from Webpack, Vite’s compilation entry is not a Javascript file, but index.html is used as the compilation entry. In index.html, main.js is loaded through . At this time, the request reaches the service layer of Vite

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