ActionScript for Flash MX: The Definitive Guide, Second Edition

arguments.caller Property

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arguments.callee Property

a reference to the function being executed

Flash 5

read/write

arguments.callee

Description

The callee property stores a reference to the function currently executing. We can use this

reference to execute the current function again or to identify the current function through

comparison.

Example

function someFunction () {

trace(arguments.callee = = someFunction); // Displays: true

}

// An unnamed recursive function

countToTen = function () {

i++;

trace(i);

if (i < 10) {

arguments.callee();

}

};

// Invoke the unnamed recursive function

countToTen();

arguments.caller Property

a reference to the calling function

Flash 6

read/write

arguments.caller

Description

The caller property stores a reference to the function that called the current function. If

the current function was not called by another function,

caller is null. For example:

// Create a function that calls two other functions

function formatPage () {

formatTitle();

formatBody();

}

function formatTitle () {

// Check if the function was called by formatPage()

trace(arguments.caller = = formatPage);

}

function formatBody () {

// Check if the function was called by formatPage()

trace(arguments.caller = = formatPage);

}