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<!DOCTYPE html> <html> <body> <h2>JavaScript</h2> <h3>The window.location object</h3> <p id="demo"></p> <p><b>Note: </b>If the port number is default (80 for http and 443 for https), most browsers will display 0 or nothing.</p> <script> document.getElementById("demo").innerHTML = "The URL port number of the current page is: " + window.location.port; </script> </body> </html>
