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<!DOCTYPE html> <html> <body> <h2 onclick="showCoords(event)">Click this heading to get the x (horizontal) and y (vertical) coordinates of the mouse pointer when it was clicked.</h2> <p><strong>Tip:</strong> Try to click different places in the heading.</p> <p id="demo"></p> <script> function showCoords(event) { var x = event.clientX; var y = event.clientY; var coords = "X coords: " + x + ", Y coords: " + y; document.getElementById("demo").innerHTML = coords; } </script> </body> </html>