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The react-frame-component package provides a React <Frame /> component for rendering React children inside an iframe. Install the package, import its default export, and wrap the content you want to render in the frame. This guide covers the basic setup, frame HTML, access to the inner document, and a narrow compatibility option.
Install and render React content in a frame
Install the package from npm, then import its default Frame export:
npm install --save react-frame-componentimport Frame from 'react-frame-component';Put the React elements that belong inside the iframe between the component’s opening and closing tags:
function Preview({ children }) {
return (
<Frame>
<h1>{children}</h1>
</Frame>
);
}The package renders those children in the iframe rather than in the parent document. You can wrap a single component or place Frame around a larger part of your interface.
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Choose the frame’s HTML and mount point
Provide initial document content with initialContent
initialContent sets the initial HTML injected into the iframe. Its documented default provides an HTML document with a body div for React to render into. The body needs at least one div for React rendering.
The initial HTML is injected only once. Changing the initialContent prop later does not replace the frame’s existing content, so set it correctly when the frame is first created.
Add content with head
The head prop accepts a DOM node for content associated with the frame. The README describes it as being injected into the frame body before the children and notes that it can be updated; stylesheets are one example of content to supply this way.
Select a mount target with mountTarget
When your initialContent contains multiple possible mounting locations, use mountTarget to select one with a CSS selector, such as #mountHere. The selected element is where the frame’s React children mount.
Access the iframe element, window, and document
Get the iframe element with a React ref
A ref attached to Frame gives you the inner iframe DOM element. For example, a ref created with useRef can be used when you need the iframe element for focus management, imperative animation, or integration with a third-party DOM library.
Read the inner window and document
To work with the frame’s browsing context, use the package’s useFrame hook inside a descendant of Frame, or use FrameContextConsumer. These provide access to the inner iframe’s window and document; they are distinct from the parent page’s browsing context.
Handle rendering callbacks
The package lists contentDidMount and contentDidUpdate callbacks for work tied to rendering inside the frame. The iframe’s content has its own rendering lifecycle, and those calls may happen after the parent component’s lifecycle. Use the frame callbacks when an operation must wait for the inner content rather than assuming the parent has finished rendering it.
When to use dangerouslyUseDocWrite
By default, dangerouslyUseDocWrite is false, and the package supplies initial content with the iframe’s srcdoc attribute. The README describes switching this option to document.write() for libraries such as reCAPTCHA and Google Maps that depend on the frame’s location or origin.
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Treat this as a targeted compatibility workaround, not the normal setup: the package README calls the document.write() path “unperformant and unrecommended.”
What to check before adopting the package
The npm listing surfaced version 5.3.2 and described built-in TypeScript declarations. Registry listings can change, so check the package’s current npm entry before relying on a specific version. The available package information does not establish a supported React version range; verify compatibility for your app rather than assuming one.
Choose this approach when the requirement is to render React content in an iframe and work with that frame’s document or context. If the content does not need an iframe, render it directly in the parent document instead. The package information cited here does not establish security guarantees or comparative performance, so do not treat iframe use alone as proof of either.
Sources: react-frame-component README; react-frame-component on npm.
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