JavaScript Boolean Object Properties and Methods

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JavaScript Boolean Object

JavaScript Boolean Object Properties and Methods

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Author : Exforsys Inc. Published on: 7th Jun 2007

JavaScript Boolean Object

Property of Boolean Object:

Properties are the values associated with an object. A Boolean object has only one property, the value of the object - which is either true or false.

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Methods used with Boolean Object:

Two methods used with Boolean Objects are:

valueOf()
toString()

valueOf():

valueOf() is used to return the primitive value of a Boolean object.

General Syntax of the valueOf method:

booleanObject.valueOf()

For example:

<html>
   <body>
     <script type="text/javascript">

          var exforsys = new Boolean(true)
          document.write(exforsys.valueOf())
    </script>
   </body>
</html>

In the above example, a boolean object exforsys is created with its initial value set as true. The value of the boolean object exforsys is printed using the valueOf() with the boolean object exforsys resulting in a true value.

toString():

The toString() method is used to convert a Boolean value to a string and returns the result.

General Syntax of the toString() method:

booleanObject.toString()

For example:

<html>
   <body>
     <script type="text/javascript">

          var exforsys = new Boolean(true)
          document.write(exforsys.toString())
    </script>
   </body>
</html>

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The output of the above example is

true

In the above example, a boolean object exforsys is created with its initial value set as true. Then this Boolean value true is converted to a string using the method toString() along with the boolean object exforsys. This is outputs, resulting in a true string.

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