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

onextra1

onextra1
Type: script code
This should be set to code which is called when the user presses the extra1 button.

Document Tags and Contributors

 Contributors to this page: Sheppy, Marsf, Mgjbot, Ptak82
 Last updated by: Sheppy,