HTMLIFrameElement: credentialless property
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The credentialless
property of the HTMLIFrameElement
interface indicates whether the <iframe>
is credentialless, meaning that documents inside will be loaded using new, ephemeral contexts.
Those contexts do not have access to their network, cookies and storage data associated with their origin. Instead, they use new ones, local to the top-level document lifetime. It means any data stored won't be accessible anymore after the user navigates away from the page or reloads it.
In return, the Cross-Origin-Embedder-Policy
(COEP) embedding rules can be lifted, so documents with COEP set can embed third-party documents that do not. See IFrame credentialless for a deeper explanation.
Value
A boolean. The default value is false
; set it to true
to make the <iframe>
credentialless.
Examples
Get
Specify a credentialless <iframe>
like so:
html
<iframe
src="https://en.wikipedia.org/wiki/Spectre_(security_vulnerability)"
title="Spectre vulnerability Wikipedia page"
width="960"
height="600"
credentialless></iframe>
Return the credentialless
property value:
js
const iframeElem = document.querySelector("iframe");
console.log(iframeElem.credentialless); // will return true in supporting browsers
Set
Alternatively, specify the minimum of details in the HTML:
html
<iframe width="960" height="600"> </iframe>
And set credentialless
to true
then load the <iframe>
contents via script:
js
const iframeElem = document.querySelector("iframe");
iframeElem.credentialless = true;
iframeElem.title = "Spectre vulnerability Wikipedia page";
iframeElem.src =
"https://en.wikipedia.org/wiki/Spectre_(security_vulnerability)";
Specifications
No specification found
No specification data found for api.HTMLIFrameElement.credentialless
.
Check for problems with this page or contribute a missing spec_url
to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.
Browser compatibility
BCD tables only load in the browser