ES6 - Boolean


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

Use the following syntax to create a boolean object.

var val = new Boolean(value);

Boolean Properties

Following is a list of the properties of Boolean object.

Sr.No Property & Description
1 constructor

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

2 prototype

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

Boolean Methods

Following is a list of the methods of Boolean object and their description.

Sr.No Method & Description
1 toSource()

Returns a string containing the source of the Boolean object; you can use this string to create an equivalent object.

2 toString()

Returns a string of either "true" or "false" depending upon the value of the object.

3 valueOf()

Returns the primitive value of the Boolean object.

In the following sections, we will take a look at a few examples to demonstrate the usage of the Boolean methods.