HTMLIFrameElement: contentDocument property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The contentDocument read-only property of the HTMLIFrameElement interface returns a Document (that is, the active document in the inline frame's nested browsing context) if the iframe and the iframe's parent document are Same Origin, else returns null.
Example of contentDocument
js
const iframeDocument = document.querySelector("iframe").contentDocument;
iframeDocument.body.style.backgroundColor = "blue";
// This would turn the iframe blue.
Specifications
| Specification |
|---|
| HTML # dom-iframe-contentdocument |