User Guide

128 Chapter 2: ActionScript Language Reference
Boolean class
Availability
Flash Player 5 (became a native object in Flash Player 6, which improved
performance significantly).
Description
The Boolean class is a wrapper object with the same functionality as the standard JavaScript
Boolean object. Use the Boolean class to retrieve the primitive data type or string representation
of a Boolean object.
You must use the constructor
new Boolean() to create a Boolean object before calling
its methods.
Method summary for the Boolean class
Constructor for the Boolean class
Availability
Flash Player 5.
Usage
new Boolean([x]) : Boolean
Parameters
x
Any expression. This parameter is optional.
Returns
A reference to a Boolean object.
Description
Constructor; creates a Boolean object. If you omit the x parameter, the Boolean object is
initialized with a value of
false. If you specify a value for the x parameter, the method evaluates
it and returns the result as a Boolean value according to the rules in the
Boolean() function.
Example
The following code creates a new empty Boolean object called myBoolean:
var myBoolean:Boolean = new Boolean();
Method Description
Boolean.toString()
Returns the string representation ("true" or "false") of the Boolean object.
Boolean.valueOf()
Returns the primitive value type of the specified Boolean object.
CHAPTER 2
ActionScript Language Reference