MACROMEDIA FLASH 8-LEARNING ACTIONSCRIPT 2.0 IN FLASH, Руководство пользователя

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About arrays 171
for (j = 0; j < gridSize; j++) {
mainArr[i][j] = "[" + i + "][" + j + "]";
}
}
trace(mainArr);
This ActionScript creates a 3 x 3 array and sets the value of each array node to its index.
Then you trace the array (
mainArr
).
3.
Select Control > Test Movie to test the code.
You see the following display in the Output panel:
[0][0],[0][1],[0][2],[1][0],[1][1],[1][2],[2][0],[2][1],[2][2]
You can also use nested
for
loops to iterate through the elements of a multidimensional array,
as shown in the next example.
To use a for loop to iterate a multidimensional array:
1. Create a new Flash document, and save it as multiArray3.fla .
2.
Add the following ActionScript to Frame 1 of the Timeline:
// from previous example
var gridSize:Number = 3;
var mainArr:Array = new Array(gridSize);
var i:Number;
var j:Number;
for (i = 0; i < gridSize; i++) {
mainArr[i] = new Array(gridSize);
for (j = 0; j < gridSize; j++) {
mainArr[i][j] = "[" + i + "][" + j + "]";
}
}
In this code, seen in the previous example, the outer loop iterates through each element
of
mainArray
. The inner loop iterates through each nested array and outputs each
array node.
3.
Add the following ActionScript to Frame 1 of the Timeline, following the code you entered
in step 2:
// iterate through elements
var outerArrayLength:Number = mainArr.length;
for (i = 0; i < outerArrayLength; i++) {
var innerArrayLength:Number = mainArr[i].length;
for (j = 0; j < innerArrayLength; j++) {
trace(mainArr[i][j]);
}
}
This ActionScript iterates through the elements of the array. You use the
length
property
of each array as the loop condition.