Operators > -- (decrement)
-- (decrement)Syntax
--expression
expression--
Arguments
expression
A variable, number, element in an array, or property of an object.
Description
Operator; a pre-decrement and post-decrement unary operator that subtracts 1 from the expression
. The pre-decrement form of the operator (--expression
) subtracts 1 from expression
and returns the result. The post-decrement form of the operator (expression--
) subtracts 1 from the expression
and returns the initial value of the expression
(the result prior to the subtraction).
Player
Flash 4 or later.
Example
The pre-decrement form of the operator decrements x
to 2 (x - 1 = 2
), and returns the result as y
:
x = 3;
y = --x
The post-decrement form of the operator decrements x
to 2 (x - 1 = 2
), and returns the original value (x = 3
) as the result y
:
If x = 3;
y = x--