20 Adobe Actionscript Quiz Questions and Answers

1. Question: What is the correct way to declare a variable in ActionScript that can hold a string value?
A) var myString: String = “Hello”;
B) string myString = “Hello”;
C) var myString = String(“Hello”);
D) declare myString as String = “Hello”;
Answer: A
Explanation: In ActionScript, variables are declared using the ‘var’ keyword followed by the variable name, data type, and initial value, making A the correct syntax.

2. Question: Which keyword is used to define a class in ActionScript?
A) class
B) function
C) define
D) public
Answer: A
Explanation: The ‘class’ keyword is used to define a new class in ActionScript, which serves as a blueprint for objects.

3. Question: How do you create an array in ActionScript?
A) var myArray:Array = new Array();
B) var myArray = array();
C) var myArray = [1, 2, 3];
D) Both A and C
Answer: D
Explanation: ActionScript allows arrays to be created using the Array constructor or literal syntax, so both options are valid.

4. Question: What does the ‘trace’ function do in ActionScript?
A) Outputs text to the console
B) Draws a line on the stage
C) Creates a trace route for events
D) Imports external files
Answer: A
Explanation: The ‘trace’ function is used for debugging by outputting messages to the Output panel in the Flash IDE.

5. Question: Which event is triggered when a button is clicked in ActionScript?
A) MouseEvent.CLICK
B) Event.CLICK
C) ButtonEvent.CLICK
D) Both A and B
Answer: D
Explanation: MouseEvent.CLICK and Event.CLICK can both be used, but MouseEvent.CLICK is more specific for mouse interactions.

6. Question: What is the purpose of the ‘super’ keyword in ActionScript?
A) Calls the parent class’s constructor or method
B) Defines a subclass
C) Imports super classes
D) Loops through arrays
Answer: A
Explanation: ‘super’ is used to access and call functions or properties from the parent class in inheritance.

7. Question: How do you add an event listener in ActionScript?
A) object.addEventListener(Event.TYPE, handlerFunction);
B) object.listenFor(Event.TYPE, handlerFunction);
C) object.onEvent(Event.TYPE, handlerFunction);
D) object.eventAdd(Event.TYPE, handlerFunction);
Answer: A
Explanation: The ‘addEventListener’ method is the standard way to attach an event handler to an object.

8. Question: What data type is used for boolean values in ActionScript?
A) Boolean
B) bool
C) TrueFalse
D) Bit
Answer: A
Explanation: ActionScript uses the ‘Boolean’ data type for values that are either true or false.

9. Question: Which loop is used to iterate over an array in ActionScript?
A) for loop
B) while loop
C) do-while loop
D) All of the above
Answer: D
Explanation: Any of these loops can be used to iterate over an array, depending on the context, but ‘for’ is most common.

10. Question: How do you import a package in ActionScript?
A) import flash.display.Sprite;
B) include flash.display.Sprite;
C) require flash.display.Sprite;
D) use flash.display.Sprite;
Answer: A
Explanation: The ‘import’ statement is used to bring in classes from packages for use in your code.

11. Question: What is the correct syntax for a function in ActionScript?
A) function myFunction(param:String):void { }
B) def myFunction(param:String):void { }
C) function myFunction(param:String) { }
D) Both A and C
Answer: D
Explanation: Functions can be defined with or without a return type specified, but A includes it explicitly.

12. Question: Which method is used to remove an event listener?
A) removeEventListener
B) deleteEventListener
C) stopListening
D) clearEvent
Answer: A
Explanation: ‘removeEventListener’ is the method to detach an event handler from an object.

13. Question: What does NaN stand for in ActionScript?
A) Not a Number
B) Null and Number
C) New Array Number
D) Numeric Array
Answer: A
Explanation: NaN represents an invalid or undefined numeric result, such as dividing a string by a number.

14. Question: How do you access an element in an array?
A) myArray[0]
B) myArray.get(0)
C) myArray.elementAt(0)
D) Both A and B
Answer: D
Explanation: Array elements can be accessed using bracket notation or the ‘get’ method in some contexts.

15. Question: What is the base class for all display objects in ActionScript?
A) DisplayObject
B) Sprite
C) MovieClip
D) Stage
Answer: A
Explanation: DisplayObject is the root class for all objects that can be displayed on the stage.

16. Question: Which operator is used for strict equality in ActionScript?
A) ===
B) ==
C) equals()
D) isEqual
Answer: A
Explanation: ‘===’ checks for both value and type equality, making it stricter than ‘==’.

17. Question: How do you handle errors in ActionScript?
A) try { } catch (e:Error) { }
B) errorHandle { } catch (e) { }
C) tryCatch { }
D) handleError { }
Answer: A
Explanation: The ‘try-catch’ block is used to manage exceptions and errors in code.

18. Question: What is the purpose of the ‘this’ keyword?
A) Refers to the current object
B) Imports the current class
C) Defines a new variable
D) Loops through properties
Answer: A
Explanation: ‘this’ is used to refer to the current instance of a class or object.

19. Question: Which is the correct way to create a new instance of a class?
A) var obj:MyClass = new MyClass();
B) var obj = create MyClass();
C) var obj = new instance of MyClass();
D) var obj = MyClass.new();
Answer: A
Explanation: The ‘new’ keyword is used with the class constructor to create an object instance.

20. Question: How do you stop the main timeline in ActionScript?
A) stop();
B) timeline.stop();
C) main.stop();
D) pauseTimeline();
Answer: A
Explanation: The ‘stop()’ function halts the playback of the current timeline in a Flash movie.