This feature is obsolete. Although it is still supported by browsers, its usage is discouraged in new projects. Try to avoid using it.
arity property used to return the number of arguments expected by the function, however, it no longer exists and has been replaced by the
|Feature||Chrome||Firefox (Gecko)||Internet Explorer||Opera||Safari|
|Basic support||?||Not supported||?||?||?|
|Feature||Android||Chrome for Android||Firefox Mobile (Gecko)||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||?||?||Not supported||?||?||?|