ActionScript for Flash MX: The Definitive Guide, Second Edition

Number Class

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

714

|

ActionScript Language Reference

See Also

The Number class, parseFloat(), parseInt(); “Explicit Type Conversion” in Chapter 3

Number Class

wrapper class for primitive numeric data

Flash 5

Constructor

new Number(value)

Arguments

value An expression to be resolved and, if necessary, converted to a numeric value,

then wrapped in a Number object.

Class Properties

The following properties are accessed directly as properties of the Number class, using

Number.propertyName. To access them you do not need to instantiate a new Number object

(i.e., there is no need for the constructor function). Some of these properties, such as

NaN,

don’t even require the

Number.propertyName notation. You can simply use NaN as shorthand

for

Number.NaN (details follow in entries for each property).

MAX_VALUE

The largest representable positive number in ActionScript.

MIN_VALUE

The smallest representable positive number in ActionScript.

NaN Special Not-a-Number value indicating invalid numeric data.

NEGATIVE_INFINITY

Any number more negative than

–MAX_VALUE.

POSITIVE_INFINITY

Any number larger than

MAX_VALUE.

Methods

toString() Convert a number to a string.

Description

The Number class has two purposes:

• It gives us access to built-in properties that represent special numeric values—

MAX_VALUE,

MIN_VALUE, NaN, NEGATIVE_INFINITY ...