HTMLdetails

The HTML details element, represented by the <details> tag, is a semantic HTML element that allows authors to provide additional information that the user can choose to reveal or conceal. It is often used to create disclosure widgets, such as accordions or expandable sections, where a summary is displayed by default, and clicking on the summary reveals the full content.

The <details> element typically contains two main parts. The first is the <summary> element, which acts as a visible heading or label for the expandable content. The text or other elements within the <summary> are displayed to the user. The second part is the content that will be revealed or hidden. This can include any valid HTML elements.

By default, the content within the <details> element is hidden. When a user interacts with the <summary> element (usually by clicking it), the browser toggles the visibility of the remaining content. This behavior is natively supported by web browsers, meaning no JavaScript is required for basic functionality. The open attribute can be added to the <details> tag to make the content visible by default when the page loads.

The <details> element is useful for improving user experience by allowing users to control the amount of information they see. This can help reduce page clutter and make content more digestible. It is also semantically appropriate for providing supplementary details that might not be essential for all users to see immediately.