Adobe® Flex® 4 Language Reference
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__Global__ 
ArgumentError 
PackageTop Level
Classpublic dynamic class ArgumentError
InheritanceArgumentError Inheritance Error Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9, Flash Lite 4

The ArgumentError class represents an error that occurs when the arguments supplied in a function do not match the arguments defined for that function. This error occurs, for example, when a function is called with the wrong number of arguments, an argument of the incorrect type, or an invalid argument.

View the examples



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
  
ArgumentError(message:String = "")
Creates an ArgumentError object.
ArgumentError
 Inherited
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
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
[override] Returns the string "Error" by default or the value contained in the Error.message property, if defined.
Error
 Inherited
Returns the primitive value of the specified object.
Object
Constructor Detail

ArgumentError

()Constructor
public function ArgumentError(message:String = "")

Runtime Versions: Flash Lite 4

Creates an ArgumentError object.

Parameters
message:String (default = "") — A string associated with the error.
ArgumentErrorExample.as

The following example shows how an ArgumentError error is generated and handled within a try..catch statement. The println() function takes one argument, a single string, but because two strings are supplied, the error is thrown. Typically, the compiler might catch such an error, but the this[] syntax in the try statement bypasses the compiler's syntax checking for the function.
package {
    import flash.display.Sprite;
    
    public class ArgumentErrorExample extends Sprite {
        public function ArgumentErrorExample() {
                println("Hello World");
                
                try {
                    this["println"]("Hello", "World");
                }
                catch(e:ArgumentError) {
                    trace(e);
                }
        }
        
        public function println(str:String):void {
            trace(str);
        }
    }
}