MACROMEDIA FLASH MX 2004 - ACTIONSCRIPT, Reference Manual

Page: 272 / 816

272 Chapter 12: ActionScript Dictionary
Arguments class
Availability
Flash Player 5; property added in Flash Player 6.
Description
The Arguments class is an array that contains the values that were passed as parameters to any
function. Each time a function is called in ActionScript, an Arguments object is automatically
created for that function. A local variable,
arguments
, is also created and lets you refer to the
Arguments object.
Property summary for the Arguments class
arguments.callee
Availability
Flash Player 5.
Usage
arguments.callee
Description
Property; refers to the function that is currently being called.
Example
You can use the
arguments.callee
property to make an anonymous function that is recursive, as
in the following:
factorial = function (x) {
if (x <= 1) {
return 1;
} else {
return x * arguments.callee(x-1);
}
};
The following is a named recursive function:
function factorial (x) {
if (x <= 1) {
return 1;
} else {
return x * factorial(x-1);
}
}
Property Description
arguments.callee
Refers to the function being called.
arguments.caller
Refers to the calling function.
arguments.length
The number of parameters passed to a function.