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<!DOCTYPE html> <html> <body> <div role="list"> <div role="listitem" aria-label="Item 1"></div> <div role="listitem" aria-label="Item 2"></div> <div role="listitem" aria-label="Item 3" id="item3" hidden></div> </div> <script> function go() { document.querySelector('#item3').removeAttribute('hidden'); } </script> </body> </html>