# How to convert a value into Boolean in JavaScript?

JavascriptFront End TechnologyObject Oriented Programming

There are three ways to convert a value into boolean. In those 3 methods, 2 methods include the Boolean keyword in them whereas the other method is a new method in which a symbol !! is used. Let's discuss them in detail.

## Using Boolean keywod

### Example

In the following example, the methods which use the Boolean keyword in them were implemented and the result is displayed as shown in the output.

Live Demo

<html>
<body>
<script>
const isTrue = 'Golden State Warriors';
document.write(new Boolean(isTrue));
document.write("</br>");
document.write(Boolean(isTrue));
</script>
</body>
</html>

### Output

true
true

## Using !!

### Example

In the following example, instead of Boolean keyword a symbol(!!) is used to convert a value to Boolean.

Live Demo

<html>
<body>
<script>
const isTrue = 'Golden State Warriors';
document.write(!!isTrue);
</script>
</body>
</html>

### Output

true
Updated on 30-Jul-2019 22:30:26