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<!DOCTYPE html> <html> <body> <script> document.write("Hello World!"); </script> <p>Click the button to display the number of script elements in the document.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.scripts.length; document.getElementById("demo").innerHTML = "Found " + x + " script elements."; } </script> </body> </html>