Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

The HTMLDetailsElement interface provides special properties (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating <details> elements.

EventTarget Node Element HTMLElement HTMLDetailsElement

Instance properties

Inherits properties from its parent, HTMLElement.

A boolean value reflecting the open HTML attribute, indicating whether or not the element's contents (not counting the <summary>) is to be shown to the user.

Instance methods

No specific method; inherits methods from its parent, HTMLElement.


Listen to this event using addEventListener() or by assigning an event listener to the oneventname property of this interface.


Fired when the open/closed state of a <details> element is toggled.


HTML Standard
# htmldetailselement

Browser compatibility

BCD tables only load in the browser

See also

  • The HTML element implementing this interface: <details>