Testing for Existence : Object « Class « Flash / Flex / ActionScript

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Flash / Flex / ActionScript » Class » Object 
Testing for Existence
 

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

        var notes:Object = {Roger: "hereiam"};
        trace"Roger" in notes )// Returns true
        trace"Josh" in notes)// Returns false

    }
  }
}

        
Related examples in the same category
1. Creating an Object: var variableName:datatype = new ClassName();
2. Using the dot (.) operator to create the same variable causes an error because it violates the syntactic rules for identifiers:
3. Accessing Object Properties
4. Accessing Object Methods
5. Using Objects as Associative Arrays
6. Use this operator to investigate instances of classes for methods and public properties
7. Removing Properties
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