-= (subtraction assignment) 259
-= (subtraction assignment)
Availability
Flash Player 4.
Usage
expression1 -= expression2
Parameters
expression1,expression2
A number or expression that evaluates to a number.
Returns
Nothing.
Description
Operator (arithmetic compound assignment); assigns expression1 the value of expression1 -
expression2. For example, the following two statements are the same:
x -= y;
x = x - y;
String expressions must be converted to numbers; otherwise, NaN is returned.
Example
Usage 1: The following example uses the -= operator to subtract 10 from 5 and assign the result
to the variable
x.
x = 5;
y = 10;
x -= y
trace(x);
//returns -5
Usage 2: The following example shows how strings are converted to numbers.
x = "5";
y = "10";
x -= y;
trace(x);
// returns -5
To Next Page
Loading...