Boolean objects in JavaScript

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

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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