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Flash Player 5.
my_array.length
Property; a nonzero-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.
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
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