Javascript booleans reference

Javascript build-in Boolean object reference.

Create booleans:

To create an object: new Boolean(value)
You uses the new keyword to create an object that contains a primitive boolean.
To use as a function: Boolean(value])
When the Boolean object is used as a function the return will be a primitive boolean.
value: An absent value argument results in boolean false.
An example of using the new Number(string):
<script type="text/javascript">
// without any argument
var bool1= new Boolean();
document.write( bool1+"<br>");
// create an Object
var bool2= new Boolean(true);
document.write( bool2+"<br>");
// used as function
var bool3= Boolean(true);
document.write( bool3+"<br>");

General information about the object member types:

  1. Prototype created methods, properties or constants can only be used on instances of an object or on a primitive datatype.
  2. Constructor created methods, properties or constants can NOT be used on instances of an object or on a primitive datatype.

Prototype Methods:

Syntax: toString()
Returns the string representation of the object which is a primitive string of either 'true' or 'false'.
Return value: The primitive string of the boolean value ('true' or 'false').

Prototype Properties:

Syntax: Boolean.prototype.constructor
This property of the Bollean.prototype holds the reference back to the Boolean object.
Important note: This is the same as the constructor property of an instantiated object

Constructor (Boolean) Properties:

Syntax: Boolean.constructor
The constructor property is a reference to the function that will be invoked to create a Boolean object.

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