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Task 48
Accessible toggle
A menu button needs aria-expanded kept in sync with the panel.
Task
Which attribute tells screen readers a menu is open?
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const b=document.createElement('button');
b.setAttribute('aria-expanded','false');
document.body.appendChild(b);
console.log(document.querySelector('[aria-expanded]') !== null);
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Ask yourself: Which attribute tells screen readers a menu is open?