<selectedcontent>
Mirrors the chosen option's content into a customizable select's closed button.
Experimental — limited availability · Forms
When to use it
Inside a button that is the first child of select, activated by CSS appearance: base-select — enables rich styled selects with native behavior.
When not to
Experimental and Chromium-first; frameworks re-rendering option content won't auto-update the mirrored clone.
Example
<select>
<button>
<selectedcontent></selectedcontent>
</button>
<option>🍎 Apple</option>
<option>🍊 Orange</option>
</select>