Expand / Collapse Widget Examples

Explore two approaches to expand/collapse interactions: the native <details> element and a custom button-driven disclosure with accessible state management.

Native Details Widget

How does the native details element work?

The <details> element provides built-in expand/collapse behavior without additional scripting. Users can click the summary to toggle visibility of the enclosed content.

Advantages include:

  • Automatic accessibility semantics and keyboard support.
  • No JavaScript required for the core interaction.
  • Simple HTML structure that progressively enhances.

Custom Accessible Disclosure