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<!DOCTYPE html> <html> <body style="background:#f3f3f3 url('w3css.gif') no-repeat fixed;"> <h1>Hello World!</h1> <p>The background-image is fixed.</p> <p>The background-image is fixed.</p> <p>The background-image is fixed.</p> <p>The background-image is fixed.</p> <p>The background-image is fixed.</p> <p>The background-image is fixed.</p> <button onclick="myFunction()">Get background-attachment value</button> <script> function myFunction() { alert(document.body.style.backgroundAttachment); } </script> </body> </html>