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<!DOCTYPE html> <html> <body onclick="myFunction(event)"> <p>Click on any elements in this document to find out which element triggered the onclick event.</p> <h1>This is a heading</h1> <button>This is a button</button> <span>A span element</span> <p id="demo"></p> <script> function myFunction(event) { var x = event.target; document.getElementById("demo").innerHTML = "Triggered by a " + x.tagName + " element"; } </script> </body> </html>