MatSubtraction Operator (Mat, Scalar)

public static MatExpr operator -(
	Mat a,
	Scalar s
)

Public Shared Operator - ( 
	a As Mat,
	s As Scalar
) As MatExpr

public:
static MatExpr^ operator -(
	Mat^ a, 
	Scalar s
)

static let inline (-)
        a : Mat * 
        s : Scalar  : MatExpr

JavaScript does not support overloaded operators.