Join MDN and developers like you at Mozilla's View Source conference, 12-14 September in Berlin, Germany. Learn more at

Type: integer
The amount by which the curpos (for scroll bars) or value (for number boxes and scale) attribute changes when the arrows are clicked(or scales are dragged). The default value is 1.

Document Tags and Contributors

 Contributors to this page: Sheppy, ziyunfei, kmaglione, trevorh, Marsf, Mgjbot, BenoitL, Ptak82, Dria
 Last updated by: Sheppy,