User Guide

Object.constructor 665

Object.constructor

Availability

Flash Player 5

Usage

myObject.constructor

Description

Property; reference to the constructor function for a given object instance. The constructor

property is automatically assigned to all objects when they are created using the constructor for

the Object class.

Example

The following example is a reference to the constructor function for the myObject object.

var my_str:String = new String("sven");

trace(my_str.constructor == String); //output: true

If you use the instanceof operator, you can also determine if an object belongs to a specified

class:

var my_str:String = new String("sven");

trace(my_str instanceof String); //output: true

However, in the following example the Object.constructor property converts primitive data

types (such as the string literal seen here) into wrapper objects. The

instanceof operator does

not perform any conversion, as seen in the following example:

var my_str:String = "sven";

trace(my_str.constructor == String); //output: true

trace(my_str instanceof String); //output: false