PackageTop Level
Classpublic dynamic class ReferenceError
InheritanceReferenceError Inheritance Error Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9

A ReferenceError exception is thrown when a reference to an undefined property is attempted on a sealed (nondynamic) object. References to undefined variables will result in ReferenceError exceptions to inform you of potential bugs and help you troubleshoot application code.

However, you can refer to undefined properties of a dynamic class without causing a ReferenceError exception to be thrown. For more information, see the dynamic keyword.

View the examples

See also

dynamic keyword

Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 InheritederrorID : int
[read-only] Contains the reference number associated with the specific error message.
Error
 Inheritedmessage : String
Contains the message associated with the Error object.
Error
 Inheritedname : String
Contains the name of the Error object.
Error
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
Public Methods
 MethodDefined By
  
ReferenceError(message:String = "")
Creates a new ReferenceError object.
ReferenceError
 Inherited
getStackTrace():String
Returns the call stack for an error as a string at the time of the error's construction (for the debugger version of Flash Player and the AIR Debug Launcher (ADL) only; returns null if not using the debugger version of Flash Player or the ADL.
Error
 Inherited
hasOwnProperty(name:String):Boolean
Indicates whether an object has a specified property defined.
Object
 Inherited
isPrototypeOf(theClass:Object):Boolean
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
propertyIsEnumerable(name:String):Boolean
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
toString():String
Returns the string "Error" by default or the value contained in the Error.message property, if defined.
Error
 Inherited
valueOf():Object
Returns the primitive value of the specified object.
Object
Constructor Detail
ReferenceError()Constructor
public function ReferenceError(message:String = "")

Creates a new ReferenceError object.

Parameters
message:String (default = "") — Contains the message associated with the ReferenceError object.
Examples How to use examples
ReferenceErrorExample.as

The following example shows how a ReferenceError exception can be generated and handled within a try..catch statement. 
package {
    import flash.display.Sprite;

    public class ReferenceErrorExample extends Sprite {

        public function ReferenceErrorExample() {
            try {
                this["someMember"] = true;
            }
            catch(e:ReferenceError) {
                trace(e);
            }
        }
    }
}



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Wed Nov 19 2008, 09:06 AM -08:00
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