JavaScript Boolean valueOf() Method

Javascript Boolean valueOf() method is used to return a boolean value, either true or false, depending on the value of the boolean object.

Syntax

boolean.valueOf()

Parameters

It doesn’t accept any parameter.

Return Value

It returns a boolean value, either true or false.

Example 1: How to Use JavaScript Boolean valueOf() Method

let data = new Boolean(79);
console.log(data.valueOf());

let data2 = new Boolean("askjavascript");
console.log(data2.valueOf());

Output

true
true

Example 2: Boolean object with value 0

let data3 = new Boolean(0);
console.log(data3.valueOf());

Output

false

Example 3: Boolean object with value -1

let data4 = new Boolean(-1);
console.log(data4.valueOf());

Output

true

Example 4: Boolean object with value 1

let data5 = new Boolean(1);
console.log(data5.valueOf());

Output

true

Example 5: Boolean object with true and false value

let data6 = new Boolean(true); 
console.log(data6.valueOf());

let data7 = new Boolean(false); 
console.log(data7.valueOf());

Output

true
false

Example 6: Boolean object with conditional expression

let age = 24;
let isAdult = new Boolean(age >= 18);
let result = isAdult.valueOf();
console.log(result);

true

Example 7: Boolean object with Empty String

let data8 = new Boolean(""); 
console.log(data8.valueOf());

Output

false

Example 8: Boolean object with complex value

let data9 = new Boolean(2 + 4kl);
console.log(data9.valueOf());

Output

SyntaxError: Invalid or unexpected token

Browser Compatibility

That’s it!

Related posts

JavaScript Boolean() Constructor

JavaScript Boolean toString()

Krunal

Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.