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<html><body><h1>Keyboard Events</h1><h2>The which Property</h2><p>Press the Escape/Esc key on the keyboard (usually in the top left corner) in the input field, to alert some text.</p><input type="text" size="50" onkeydown="myFunction(event)"> <script>function myFunction(event) { let x = event.which || event.keyCode; if (x == 27) { alert ("You pressed the Escape key!"); }}</script></body></html>