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<html><body><h1>Keyboard Events</h1><h2>The altKey Property</h2><p>Press a key on the keyboard in the input field to find out if the ALT key was pressed.</p><input type="text" onkeydown="isKeyPressed(event)"><p id="demo"></p><script>function isKeyPressed(event) { const x = document.getElementById("demo"); if (event.altKey) { x.innerHTML = "The ALT key was pressed!"; } else { x.innerHTML = "The ALT key was NOT pressed!"; }}</script></body></html>