User Guide

252 ActionScript classes

if (my_array[0] == undefined) { // No quotation marks around undefined.

trace("undefined is a special value, not a string");

} // Traces: undefined is a special value, not a string.

Usage 3: The following example creates the new Array object go_gos_array with an initial

length of 5:

var go_gos_array:Array = new Array("Belinda", "Gina", "Kathy", "Charlotte",

"Jane");

trace(go_gos_array.length); // Returns 5.

trace(go_gos_array.join(", ")); // Displays elements.

The initial elements of the go_gos_array array are identified, as shown in the following

example:

go_gos_array[0] = "Belinda";

go_gos_array[1] = "Gina";

go_gos_array[2] = "Kathy";

go_gos_array[3] = "Charlotte";

go_gos_array[4] = "Jane";

The following code adds a sixth element to the go_gos_array array and changes the second

element:

go_gos_array[5] = "Donna";

go_gos_array[1] = "Nina"

trace(go_gos_array.join(" + "));

// Returns Belinda + Nina + Kathy + Charlotte + Jane + Donna.