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


Inherits properties from its parent, HTMLElement.
Is a boolean reflecting the open HTML attribute, indicating whether or not the element’s contents (not counting the <summary>) is to be shown to the user.


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.


Specification Status Comment
HTML Living Standard
The definition of 'HTMLDetailsElement' in that specification.
Candidate Recommendation

Browser compatibility

BCD tables only load in the browser

See also

  • The HTML element implementing this interface: <details>