142
ActionScript language elements
-- decrement operator
--
expression
expression
--
A pre-decrement and post-decrement unary operator that subtracts 1 from the
expression
. The
expression
can be a variable, element in an array, or property of an object. 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
expression
(the value prior to the
subtraction).
Availability:
ActionScript 1.0; Flash Lite 1.0
Operands
expression :
Number
- A number or a variable that evaluates to a number.
Returns
Number
- The result of the decremented value.
Example
The pre-decrement form of the operator decrements
x
to 2 (
x
-
1 = 2
) and returns the result
as
y
:
var x:Number = 3;
var y:Number = --x; //y is equal to 2
The post-decrement form of the operator decrements
x
to 2 (
x
-
1 = 2
) and returns the
original value of
x
as the result
y
:
var x:Number = 3;
var y:Number = x--; //y is equal to 3
The following example loops from 10 to 1, and each iteration of the loop decreases the
counter variable
i
by 1.
for (var i = 10; i>0; i--) {
trace(i);
}
/ division operator
expression1
/
expression2
Divides
expression1
by
expression2
. The result of the division operation is a double-
precision floating-point number.
Availability:
ActionScript 1.0; Flash Lite 1.0
Summary of Contents for FLASHLITE2 ACTIONSCRIPT-LANGUAGE
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