TypeError

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

Language Version:

ActionScript 3.0

Runtime Versions:

Flash Player 9, AIR 1.0, 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

More examples

Responding to error events and status

Related API Elements

is operator
instanceof operator
super statement
RegExp class

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

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

TypeError

()

Constructor

public function TypeError(message:String = "")

Runtime Versions:

Flash Lite 4, Flash Player 9, AIR 1.0

Creates a new TypeError object.

Parameters

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

More examples

Responding to error events and status

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);
            }
        }
    }
}

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TypeError - AS3

Classes x

TypeError