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<!DOCTYPE html> <html> <body> <h1>The Element Object</h1> <h2>The isDefaultNamespace Property</h2> <p>Is the specified namespace default?</p> <p id="demo"></p> <script> const element = document.documentElement; let answer = element.isDefaultNamespace("http://www.w3.org/1999/xhtml"); document.getElementById("demo").innerHTML = answer; </script> </body> </html>
