Return the value of the background-attachment property:
<!DOCTYPE html> <html> <body style="background:#f3f3f3 url('background3.png') 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> <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> <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> <p id="demo"></p> <script> function myFunction() {/* w ww . j av a 2 s . c o m*/ document.getElementById("demo").innerHTML = document.body.style.backgroundAttachment; } </script> </body> </html>