MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Reference page 244

Example
The following example creates an array with three elements: Earth, Moon, and Sun. It then joins
the array three times—first using the default separator (a comma [,] and a space), then using a
dash (-), and then using a plus sign (+).
var a_array:Array = new Array("Earth","Moon","Sun")
trace(a_array.join());
// displays Earth,Moon,Sun
trace(a_array.join(" - "));
// displays Earth - Moon - Sun
trace(a_array.join(" + "));
// displays Earth + Moon + Sun
The following example creates a nested array containing two arrays. The first array has three
elements: Europa, Io, and Callisto. The second array has two elements: Titan and Rhea. It joins
the array using a plus sign (+), but the elements within each nested array remain separated by a
comma (,).
var a_nested_array:Array = new Array(["Europa", "Io", "Callisto"], ["Titan",
"Rhea"]);
trace(a_nested_array.join(" + "));
// returns Europa,Io,Callisto + Titan,Rhea
See Also
String.split()
Array.length
Availability
Flash Player 5.
Usage
my_array.length:Number
Description
Property; a non-negative integer specifying the number of elements in the array. This property is
automatically updated when new elements are added to the array. When you assign a value to an
array element (for example,
greater than the
Note: If you assign a value to the length property that is shorter than the existing length, the array will
be truncated.
Example
The following code explains how the
var my_array:Array = new Array();
trace(my_array.length); // initial length is 0
my_array[0] = 'a';
trace(my_array.length); // my_array.length is updated to 1
my_array[1] = 'b';
trace(my_array.length); // my_array.length is updated to 2
244 Chapter 6: ActionScript Core Classes
my_array[index] = value
property, the
length length
length
), if
index
property is updated to
property is updated:
is a number, and
index+1
.
index+1
is