# Array.length

#### Availability

Flash Player 5.

#### Usage

    my_array.length

#### Description

Property; a non-zero-based 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, `my_array``[``index``] =` `value`)`,` if `index` is a number, and `index``+1` is greater than the `length` property, the `length` property is updated to `index``+ 1`.

#### Example

The following code explains how the `length` property is updated.

    my_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
    my_array[9] = 'c';
    trace(my_array.length); // my_array.length is updated to 10