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Showing content from https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/Boolean.html below:

Adobe ActionScript® 3 (AS3 ) API Reference

Language Version:  ActionScript 3.0 Runtime Versions:  AIR 1.0, Flash Player 9, Flash Lite 4

A Boolean object is a data type that can have one of two values, either

true

or

false

, used for logical operations. Use the Boolean class to retrieve the primitive data type or string representation of a Boolean object.

To create a Boolean object, you can use the constructor or the global function, or assign a literal value. It doesn't matter which technique you use; in ActionScript 3.0, all three techniques are equivalent. (This is different from JavaScript, where a Boolean object is distinct from the Boolean primitive type.)

The following lines of code are equivalent:

var flag:Boolean = true;
var flag:Boolean = new Boolean(true);
var flag:Boolean = Boolean(true);

View the examples


Public Properties

  Property Defined By   constructor : Object

A reference to the class object or constructor function for a given object instance.

Object public function Boolean(expression:Object = false) Language Version:  ActionScript 3.0 Runtime Versions:  AIR 1.0, Flash Player 9, Flash Lite 4

Creates a Boolean object with the specified value. If you omit the expression parameter, the Boolean object is initialized with a value of false. If you specify a value for the expression parameter, the method evaluates it and returns the result as a Boolean value according to the rules in the global Boolean() function.

Parameters expression:Object (default = false) — Any expression.

Related API Elements


Example  ( How to use this example )

The following code creates a new Boolean object, initialized to a value of

false

called

myBoolean

:

 var myBoolean:Boolean = new Boolean();
AS3 function toString():String Language Version:  ActionScript 3.0 Runtime Versions:  AIR 1.0, Flash Player 9, Flash Lite 4

Returns the string representation ("true" or "false") of the Boolean object. The output is not localized, and is "true" or "false" regardless of the system language.

Returns String — The string "true" or "false".
Example  ( How to use this example )

This example creates a variable of type Boolean and then uses the

toString()

method to convert the value to a string for use in an array of strings:

     var myStringArray:Array = new Array("yes", "could be");
     var myBool:Boolean = 0;
     myBool.toString();
     myStringArray.push(myBool);
     trace(myStringArray); // yes,could be,false
AS3 function valueOf():Boolean Language Version:  ActionScript 3.0 Runtime Versions:  AIR 1.0, Flash Player 9, Flash Lite 4

Returns true if the value of the specified Boolean object is true; false otherwise.

Returns
Example  ( How to use this example )

The following example shows how this method works, and also shows that the value of a new Boolean object is

false

:

     var myBool:Boolean = new Boolean();
     trace(myBool.valueOf());   // false
     myBool = (6==3+3);
     trace(myBool.valueOf());   // true

The following example toggles and displays each corresponding value for the Boolean object:

 package {
    import flash.display.Sprite;

    public class BooleanExample extends Sprite {
        private var flag:Boolean;

        public function BooleanExample() {
            trace(flag);    // false
            toggle();
            trace(flag);    // true
            toggle();
            trace(flag);    // false
        }
        
        private function toggle():void{
            flag = !flag;
        }
    }
}

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Thu Dec 6 2018, 01:12 PM -08:00

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