TypeError

Package	Top Level
Class	public dynamic class TypeError
Inheritance	TypeError Error Object

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 9, Flash Lite 4

A TypeError exception is thrown when the actual type of an operand is different from the expected type.

In addition, this exception is thrown when:

An actual parameter to a function or method could not be coerced to the formal parameter type.
A value is assigned to a variable and cannot be coerced to the variable's type.
The right side of the is or instanceof operator is not a valid type.
The super keyword is used illegally.
A property lookup results in more than one binding, and is therefore ambiguous.
A method is invoked on an incompatible object. For example, a TypeError exception is thrown if a RegExp class method is "grafted" onto a generic object and then invoked.

View the examples

Public Properties

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	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
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object

Public Methods

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	Method		Defined By
		TypeError(message:String = "") Creates a new TypeError object.	TypeError
		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
		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

()

Constructor

public function TypeError(message:String = "")

Runtime Versions:

Flash Lite 4

Creates a new TypeError object.

Parameters

message:String (default = "") — Contains the message associated with the TypeError object.

Examples How to use this example

TypeErrorExample.as

The following example shows how a TypeError exception can be generated and handled within a try..catch statement.

package {
    import flash.display.DisplayObject;
    import flash.display.Sprite;

    public class TypeErrorExample extends Sprite {
        public function TypeErrorExample() {
            try {
                var child:Object = new Object();
                addChild(DisplayObject(child));
            }
            catch(e:TypeError) {
                trace(e);
            }
        }
    }
}