File: shadow-dom.md | Updated: 11/15/2025
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React Example: Shadow Dom
=================================================================================================================================================================================================================================================================================================================================================================================================================
Code ExplorerCode
Interactive SandboxSandbox
src
DogList.tsx
index.css
main.tsx
vite-env.d.ts
.gitignore
README.md
eslint.config.js
index.html
package.json
tsconfig.json
vite.config.ts
tsx
import React from 'react'
import ReactDOM from 'react-dom/client'
import './index.css'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
import { DogList } from './DogList'
const appRoot = document.getElementById('root')
if (appRoot) {
const queryClient = new QueryClient()
const shadowRoot = appRoot.attachShadow({ mode: 'open' })
const root = ReactDOM.createRoot(shadowRoot)
root.render(
<React.StrictMode>
<QueryClientProvider client={queryClient}>
<div
style={{
width: '100vw',
padding: '30px',
}}
>
<h2>Dog Breeds</h2>
<DogList />
</div>
<ReactQueryDevtools
initialIsOpen={false}
buttonPosition="bottom-left"
shadowDOMTarget={appRoot.shadowRoot!}
/>
</QueryClientProvider>
</React.StrictMode>,
)
}
import React from 'react'
import ReactDOM from 'react-dom/client'
import './index.css'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
import { DogList } from './DogList'
const appRoot = document.getElementById('root')
if (appRoot) {
const queryClient = new QueryClient()
const shadowRoot = appRoot.attachShadow({ mode: 'open' })
const root = ReactDOM.createRoot(shadowRoot)
root.render(
<React.StrictMode>
<QueryClientProvider client={queryClient}>
<div
style={{
width: '100vw',
padding: '30px',
}}
>
<h2>Dog Breeds</h2>
<DogList />
</div>
<ReactQueryDevtools
initialIsOpen={false}
buttonPosition="bottom-left"
shadowDOMTarget={appRoot.shadowRoot!}
/>
</QueryClientProvider>
</React.StrictMode>,
)
}
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