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<!DOCTYPE html> <html> <body> <h1>HTML DOM Events</h1> <h2>The onkeydown Event</h2> <p>Press and hold down a key inside the text field to set a red background color. Release the key to set a green background color.</p> <input type="text" id="demo" onkeydown="keydownFunction()" onkeyup="keyupFunction()"> <script> function keydownFunction() { document.getElementById("demo").style.backgroundColor = "red"; } function keyupFunction() { document.getElementById("demo").style.backgroundColor = "green"; } </script> </body> </html>
