Boolean objects in JavaScript

Describe

Boolean objects represent two values, or "true" or "false". If the value parameter is ignored either 0, -0, null, false, NaN , undefined, or an empty string (""), the object has an initial value of false.

Syntax

Use the following syntax to create a Boolean object.

 var  val  = new Boolean ( value ); 

Boolean properties

Below is a list of Boolean object properties:

Properties Description

constructor

Returns a reference to the Boolean function that creates that object.

prototype

The prototype property allows you to add properties and methods to an object.

Boolean methods

Below is a list of methods of the Boolean object 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: either "true" or "false" depending on the value of the object.

valueOf ()

Returns giá trị Primitive của Boolean object.

According to Tutorialspoint

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