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<!DOCTYPE html> <html> <body> <h1>HTML DOM Events</h1> <h2>The onmousedown Event</h2> <p>Use the addEventListener() method to attach a "mousedown" and "mouseup" event to a p element.</p> <p id="demo">Click me.</p> <script> document.getElementById("demo").addEventListener("mousedown", mouseDown); document.getElementById("demo").addEventListener("mouseup", mouseUp); function mouseDown() { document.getElementById("demo").innerHTML = "The mouse button is held down."; } function mouseUp() { document.getElementById("demo").innerHTML = "You released the mouse button."; } </script> </body> </html>