Top Level

# ReferenceError - AS3

Package | Top Level
Class | public dynamic class ReferenceError
Inheritance | ReferenceError Error Object

Language Version: | ActionScript 3.0

Runtime Versions: | Flash Player 9, AIR 1.0, Flash Lite 4

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

More examples

Error handling in ActionScript 3.0
Responding to error events and status

Related API Elements

dynamic keyword

Public Properties
Hide Inherited Public Properties
Show Inherited Public Properties

| Property | Defined By
--- | --- | ---
|  | constructor : Object A reference to the class object or constructor function for a given object instance. | Object
|  | errorID : int [read-only] Contains the reference number associated with the specific error message. | Error
|  | message : String Contains the message associated with the Error object. | Error
|  | name : String Contains the name of the Error object. | Error

Public Methods
Hide Inherited Public Methods
Show Inherited Public Methods

| Method | Defined By
--- | --- | ---
|  | ReferenceError(message:String = "") Creates a new ReferenceError object. | ReferenceError
|  | getStackTrace():String Returns the call stack for an error at the time of the error's construction as a string. | Error
|  | hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined. | Object
|  | 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
|  | propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable. | Object
|  | setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations. | Object
|  | toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions. | Object
|  | toString():String [override] Returns the string "Error" by default or the value contained in the Error.message property, if defined. | Error
|  | valueOf():Object Returns the primitive value of the specified object. | Object

Constructor Detail

### ReferenceError

()
Constructor

`public function ReferenceError(message:String = "")`

Runtime Versions: | Flash Lite 4, Flash Player 9, AIR 1.0

Creates a new ReferenceError object.

Parameters

| `message:String` (default = "``")`` — Contains the message associated with the ReferenceError object.

More examples

Error handling in ActionScript 3.0
Responding to error events and status
Examples How to use this example
ReferenceErrorExample.as
The following example shows how a `ReferenceError` exception can be generated and handled within a `try..catch` statement.
Copy

    package {
        import flash.display.Sprite;

        public class ReferenceErrorExample extends Sprite {

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

© 2015 Adobe Systems Incorporated. All rights reserved.
Mon Apr 10 2017, 12:28 PM -07:00