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<html><body><h1>HTML DOM Events</h1><h2>The onkeydown Event</h2><p>Assign an "onkeydown" event to an input element.</p><p>Press a key in the input field:</p><input type="text" onkeydown="myFunction(this)"><script>function myFunction(element) { element.style.backgroundColor = "red";}</script></body></html>