Javascript Boolean Object

A JavaScript Boolean object can represent two values “true” or “false”.

How to create a Javascript boolean object:

1. By using boolean literals.
2. By using Boolean() constructor.

Syntax:

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Var b1 = true;
var b2 = new Boolean(value);
Var b1 = true; var b2 = new Boolean(value);
Var b1 = true;
var b2 = new Boolean(value);

Example:

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<!DOCTYPE html>
<html>
<body>
<script>
var boolean1=new Boolean(true);
var boolean2=new Boolean(false);
var boolean3=true;
document.write("Boolean1: "+boolean1+ "</br>");
document.write("Boolean2: "+boolean2+ "</br>");
document.write("Boolean3: "+boolean3);
</script>
</body>
</html>
<!DOCTYPE html> <html> <body> <script> var boolean1=new Boolean(true); var boolean2=new Boolean(false); var boolean3=true; document.write("Boolean1: "+boolean1+ "</br>"); document.write("Boolean2: "+boolean2+ "</br>"); document.write("Boolean3: "+boolean3); </script> </body> </html>
<!DOCTYPE html>
<html>
<body>
<script>
var boolean1=new Boolean(true);
var boolean2=new Boolean(false);
var boolean3=true;
document.write("Boolean1: "+boolean1+ "</br>");
document.write("Boolean2: "+boolean2+ "</br>");
document.write("Boolean3: "+boolean3);
</script>
</body>
</html>

Try it:

JavaScript Boolean Object Properties

Property Description
constructor It returns a reference to the Boolean function that created the object.
prototype It allows us to add properties and methods to an object.

 

JavaScript Boolean Object Methods

Method Description
toSource() It returns a string containing the source of the Boolean object.
toString() It returns a string of object values.
valueOf() It returns the primitive value of the Boolean object.