Flash / Flex / ActionScript/Statement/for

break is a keyword that allows you to stop processing a loop or conditional.

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var needle:int = 3;
       var haystack: Array = new Array(1,2,3,4,5,6);
       for (var i:int = 0; i < haystack.length; i++) {
          if (!(hay == haystack[i])) { 
            continue; 
          }
          trace("I found the needle!");
          break;
       }
   }
 }

}

       </source>
   
  

Nested for loops

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var j:Number;
       for (var i:Number = 0; i < 3; i++){
         trace(i);
         for (j = 100; j > 97; j--){
           trace("\t" + j);
         }
       } 
   }
 }

} 0

   100
   99
   98

1

   100
   99
   98

2

   100
   99
   98
       </source>
   
  

Perform more complex initializations and increments by adding additional expressions separated by commas

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       for(var i:Number = 0, a:Number = 25; i < 25; i++, a -= 2) {
         trace(i + " " + a);
       }
   }
 }

} 0 25 1 23 2 21 3 19 4 17 5 15 6 13 7 11 8 9 9 7 10 5 11 3 12 1 13 -1 14 -3 15 -5 16 -7 17 -9 18 -11 19 -13 20 -15 21 -17 22 -19 23 -21 24 -23

       </source>
   
  

Place two statements in the for statement

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       for (var i:int = 0, j:int = 10; i < 10; i++, j--) {
         trace("i is " + i);
         trace("j is " + j);
       }
   }
 }

}

       </source>
   
  

The for Statement

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){

       var total = 2;
       
       for (var i = 0; i < 2; i++) {
         total = total * 2;
       }
       
       //here"s the equivalent while loop:
       var total = 2;
       var i = 0;
       
       while (i < 2) {
         total = total * 2;
         i++;
       }
   }
 }

}

       </source>
   
  

Use a for loop to check whether a string contains the @ character

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var address = "me@moock.org";
       var isValidAddress = false;
       
       for (var i = 0; i < address.length; i++) {
         if (address.charAt(i) == "@") {
           isValidAddress = true;
           break;
         }
       }
   }
 }

}

       </source>
   
  

Use for each loop to go through the array elements

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var games:Array = ["P","S","L"];
       
       for each (var game:* in games) {
         trace(game);
       }
   }
 }

}

       </source>
   
  

Use For in loop to display all properties in an object

   <source lang="java">

for (var element:String in targetObject) {

  // do some action

} package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var weather:Object = new Object();
       weather.temp = 45;
       weather.conditions = "rain";
       weather.pressure = 970;
       
       for (var element:String in weather) {
          trace(element + ": " + weather[element]);
       }
   }
 }

}

       </source>
   
  

Use for loop statement to display all elements in an array

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){

       var myArray:Array = ["A", "B", "C", "D",  "E", "F", "G"];
       for (var i:int = 0; i < myArray.length; i++) {
          trace("Hello, " + myArray[i] + "!");
       }
   }
 }

}

       </source>
   
  

Use for loop to loop through the dynamic array

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){

       var info:Object = new Object(  );
       info.city = "Toronto";
       info.country = "Canada";
       
       for (var detailName:* in info) {
         trace(detailName);
       }
       
       for (var detailName:* in info) {
         trace(info[detailName]);
       }
   }
 }

}

       </source>
   
  

Use for statements to loop backward:

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       for (var i:int = 10; i > 0; i--) {
         trace(i);
       }
   }
 }

}

       </source>