java script learning: Boolean object

The Boolean object represents two values either "true" or "false".

Syntax:

Creating a boolean object:

var val = new Boolean(value);

If value parameter is omitted or is 0, -0, null, false, NaN, undefined, or the empty string (""), the object has an initial value of false.

Boolean Properties:

Here is a list of each property and their description.

Property	Description
constructor	Returns a reference to the Boolean function that created the object.
prototype	The prototype property allows you to add properties and methods to an object.

Boolean Methods

Here is a list of each method and its description.

Method	Description
toSource()	Returns a string containing the source of the Boolean object; you can use this string to create an equivalent object.
toString()	Returns a string of either "true" or "false" depending upon the value of the object.
valueOf()	Returns the primitive value of the Boolean object.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>Untitled Document</title>

</head>

<body>

var b1=new Boolean();

var b2=new Boolean(0);

var b3=new Boolean(1);

var b4=new Boolean(true);

var b5=new Boolean(false);

var b6=new Boolean("");

var b7=new Boolean("abc");

var b8=new Boolean("null");

document.write("b1 :"+b1+"<br/>");

document.write("b2 :"+b2+"<br/>");

document.write("b3 :"+b3+"<br/>");

document.write("b4 :"+b4+"<br/>");

document.write("b5 :"+b5+"<br/>");

document.write("b6 :"+b6+"<br/>");

document.write("b7 :"+b7+"<br/>");

document.write("b8 :"+b8+"<br/>");

</script>

</body>

</html>

<! --b1 :false

b2 :false

b3 :true

b4 :true

b5 :false

b6 :false

b7 :true

b8 :true -->

java script learning