HTMLDetailsElement

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

Instance properties

Inherits properties from its parent, {{domxref("HTMLElement")}}.

{{domxref("HTMLDetailsElement.name")}}
- : A string reflecting the name HTML attribute, which allows you to create a group of mutually-exclusive {{htmlelement("details")}} elements. Opening one of the named <details> elements of this group causes other elements of the group to close.
{{domxref("HTMLDetailsElement.open")}}
- : A boolean value reflecting the open HTML attribute, indicating whether or not the element's contents (not counting the {{HTMLElement("summary")}}) is to be shown to the user.

Instance methods

No specific method; inherits methods from its parent, {{domxref("HTMLElement")}}.

Events

Inherits events from its parent interface, {{DOMxRef("HTMLElement")}}.

Examples

Log chapters as they are opened and closed

This example uses the HTMLElement {{domxref("HTMLElement/toggle_event", "toggle")}} event to add and remove chapters from a log aside as they are opened and closed.

HTML

html

<section id="summaries">
  <p>Chapter summaries:</p>
  <details id="ch1">
    <summary>Chapter I</summary>
    Philosophy reproves Boethius for the foolishness of his complaints against
    Fortune. Her very nature is caprice.
  </details>
  <details id="ch2">
    <summary>Chapter II</summary>
    Philosophy in Fortune's name replies to Boethius' reproaches, and proves
    that the gifts of Fortune are hers to give and to take away.
  </details>
  <details id="ch3">
    <summary>Chapter III</summary>
    Boethius falls back upon his present sense of misery. Philosophy reminds him
    of the brilliancy of his former fortunes.
  </details>
</section>
<aside id="log">
  <p>Open chapters:</p>
  <div data-id="ch1" hidden>I</div>
  <div data-id="ch2" hidden>II</div>
  <div data-id="ch3" hidden>III</div>
</aside>

CSS

css

body {
  display: flex;
}

#log {
  flex-shrink: 0;
  padding-left: 3em;
}

#summaries {
  flex-grow: 1;
}

JavaScript

function logItem(e) {
  console.log(e);
  const item = document.querySelector(`[data-id=${e.target.id}]`);
  item.toggleAttribute("hidden");
}

const chapters = document.querySelectorAll("details");
chapters.forEach((chapter) => {
  chapter.addEventListener("toggle", logItem);
});

Result

{{EmbedLiveSample("Log chapters as they are opened and closed", 700, 200)}}