Return the background-repeat value of a document:
alert(document.body.style.backgroundRepeat);
<!DOCTYPE html> <html> <body style="background:#f3f3f3 url('image1.png');background-repeat:repeat-y;"> <h1>Hello World!</h1> <button type="button" onclick="myFunction()">Get background-repeat value</button> <p id="demo"></p> <script> function myFunction() {/*from w w w. j a va2 s. c om*/ document.getElementById("demo").innerHTML = document.body.style.backgroundRepeat; } </script> </body> </html>