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JavaScript Boolean() Constructor

Last Updated : 11 Apr, 2023

The Boolean() constructor in JavaScript is a built-in function that can be used to create a new Boolean object. The Boolean() constructor takes a single argument and returns a Boolean object with a value of true or false depending on the type and value of the argument passed in.

Syntax:

Boolean(value)

Parameter: This constructor accepts a single argument

value: The parameter contains the value of the boolean

Below are examples of the Boolean Constructor property.

Example 1: In this example, we will create simple boolean values

javascript

function func() { 
    let value1 = Boolean(true); 
    let value2 = Boolean(false); 
    console.log(value1); 
    console.log(value2); 
} 
func();

Output:

true
false

Example 2: In this example, we will convert String, Number, and Date to boolean data type using the Boolean constructor as a function

javascript

function func() {
    let value1 = Boolean("Hello");
    let value2 = Boolean("0");
    let value3 = Boolean(0);
    let value4 = Boolean(new Date());
    console.log(value1);
    console.log(value2);
    console.log(value3);
    console.log(value4);
}
func();

Output:

true
true
false
true

Supported Browsers:

Google Chrome
Internet Explorer
Mozilla Firefox
Safari
Opera

We have a complete list of Javascript Boolean methods, to check those please go through the Javascript Boolean Complete Reference article.

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