1. Details & Summary elements

    The <details> element generates a simple no-JavaScript widget to show/hide element contents, optionally by clicking on its child <summary> element.

  2. hidden attribute

    The `hidden` attribute may be applied to any element, and effectively hides elements similar to `display: none` in CSS.

  3. PageTransitionEvent

    Fired at the Window when the page's entry in the session history stops being the current entry. Includes the `pageshow` and `pagehide` events.

  4. htmlelement api: hidepopover

  5. virtualkeyboard api: hide

  6. window api: `pagehide` event

  7. css property: display: none: setting `display: none` on an `<option>` element hides it from the dropdown.

  8. css property: empty-cells: hide