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You can preview a React component in a browser without installing anything: open the editable sandbox linked from React’s installation guide, edit its component, and watch the preview. For a quick first test, the essential code is a capitalized function that returns JSX and is exported as the sandbox’s root component.
Render a component in React’s online sandbox
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Open React’s installation guide and find the “Try React” section. Its editable sandbox lets you experiment without installing React on your computer.
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In the sandbox’s main component file, use a function component such as:
export default function App() { return <h1>Hello, world</h1>; } -
Keep the component name capitalized. React treats components as JavaScript functions that return markup written with JSX; JSX resembles HTML but is JavaScript syntax. The sandbox exercise expects the root component to be exported, so retain
export defaultif the starter project uses that entry point. See React’s guide to your first component.Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.#1 Best Overall
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Edit the returned JSX and check the preview pane. You can also fork React’s example into a new tab if you want to keep your experiment separate from the starter.
Choose another online React playground
React’s installation guide also names CodeSandbox, StackBlitz, and CodePen as online sandboxes that support React. The guide does not compare their current features, access requirements, or limits, so choose based on what you need rather than assuming one is universally best.
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Playcode React Playground describes itself as an online React editor with live preview, hot reloading, npm packages, multiple files, and project sharing or deployment. Those are features described by the service; confirm its current availability and terms on its site.
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For a tiny component experiment, start with React’s own editable example.
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Anker USB C Hub, 7in1 Multi-Port USB Adapter, 4K@60Hz USBC to HDMI Splitter- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
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- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
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For a project involving multiple files or dependencies, check that your chosen playground supports the workflow you need.
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For sharing or collaboration, check the service’s current options and any access limits before moving work there.
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- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Online browser preview is not server rendering
A playground’s visible preview renders React in the browser. React documents browser rendering APIs under react-dom/client, server APIs that render components to HTML under react-dom/server, and separate APIs for generating static HTML. These are distinct tasks; use the approach that matches whether you want to inspect an interactive component or produce HTML on a server. See the React reference overview.
Do you need to install React or create an app?
No installation is needed for a quick online component preview. If your goal is to try a snippet, use a sandbox rather than setting up a local project. React’s installation guide says Create React App is deprecated and points people building new apps toward recommended frameworks; it is not necessary just to render a component online.
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- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
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