ifsætninger

Iframe, short for inline frame, is an HTML element used to embed another document within the current HTML document. This allows for the inclusion of content from a separate source, such as another webpage, a video, a map, or an advertisement, directly into a parent page. The embedded document is rendered as if it were part of the original page, but it maintains its own independent browsing context.

The primary function of an iframe is to isolate content. This means that scripts and styles within the iframe generally do not affect or are affected by the parent page, and vice versa. This isolation is crucial for security and stability, preventing potential conflicts between different web resources. For example, a website might use an iframe to display a YouTube video, ensuring that the video player's code does not interfere with the website's own scripts.

When embedding content using an iframe, developers specify the source URL of the content to be displayed using the `src` attribute. Other attributes, such as `width` and `height`, control the dimensions of the embedded frame, while `allowfullscreen` can enable the embedded content to be viewed in full-screen mode. Security considerations are paramount when using iframes, particularly regarding the source of the embedded content. It is generally recommended to only embed content from trusted sources to mitigate security risks like cross-site scripting (XSS) attacks.

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