ActionScript for Flash MX: The Definitive Guide, Second Edition

Object.hasOwnProperty() Method

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// Add the property.

MovieClip.prototype.addProperty("depth",

MovieClip.prototype.getDepth,

MovieClip.prototype.swapDepths);

// Try it out. Note that swapDepths() can accept either a number or a target clip.

this.createEmptyMovieClip("empty_mc", 15);

trace(empty_mc.depth); // Displays: 15

empty_mc.depth = 20; // Pass an integer to swapDepths(). Depth becomes 20.

trace(empty_mc.depth); // Displays: 20

empty_mc.depth = ball_mc; // Trade depths with ball_mc (passed to swapDepths())

See Also

MovieClip.getDepth(), MovieClip.swapDepths(), Object.__proto__, Object.watch();

Chapter 12

Object.constructor Property

a reference to the class constructor function used to create the object

Flash 5

read/write

someObject.constructor

Description

The constructor property stores a reference to the constructor function that was used to

create

someObject. For example, the constructor property of a Date object is the Date

constructor function:

now = new Date();

now.constructor = = Date; // Yields true

Note that in JavaScript, the constructor property is always read from someObject’s

constructor’s

prototype property (someObject.__proto__.constructor). In Flash Player 6

and Flash Player 5, the

constructor property is written directly to someObject so that ...