Here are a couple of examples of embedding interactive resources in HTML. Here are a few examples of code using iframe to embed an external resource: You can also use them to embed another web page into a web page. Iframes are often used to embed videos, maps, and other media on a web page. The iframe HTML tag is used to specify the URL of the document to be embedded. Photo by BrokenSphere (CC BY-SA 3.0) HTML iframe tag Example Or played with one of those Russian nested dolls. Perhaps you've seen the movie Inception, which deals with dreams within dreams. Think of it as a "webpage within a web page." An iframe is an HTML document embedded inside another HTML document on a website. Its value is undefined in a web browser that does not support. Window.credentialless is true inside a credentialless iframe and false otherwise. # How to detect the document has been embedded in a credentialless iframe? They can't communicate with the credentialless iframe. They are created in a new regular top-level context and are not credentialless. Pop-ups are opened as if noopener was set. ![]() # Are pop-ups created from credentialless as well? Once an iframe is credentialless, that applies to all iframes in the whole subtree even without a credentialless attribute.
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