ds-algo-study/DS-n-Algos/Arrays/all/boolean-constructor.md

Just experimenting with publishing a package

# Boolean() constructor

> The Boolean() constructor is used to create Boolean objects.

The **`Boolean()`** constructor is used to create [ `Boolean` ](chrome-extension://cjedbglnccaioiolemnfhjncicchinao/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean) objects.

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Syntax
------

new Boolean(\[value\])

### Parameters

`value` Optional

The initial value of the `Boolean` object.

Examples
--------

### Creating `Boolean` objects with an initial value of `false`

    var bNoParam = new Boolean();
    var bZero = new Boolean(0);
    var bNull = new Boolean(null);
    var bEmptyString = new Boolean('');
    var bfalse = new Boolean(false);
    

### Creating `Boolean` objects with an initial value of `true`

    var btrue = new Boolean(true);
    var btrueString = new Boolean('true');
    var bfalseString = new Boolean('false');
    var bSuLin = new Boolean('Su Lin');
    var bArrayProto = new Boolean([]);
    var bObjProto = new Boolean({});

Specifications
--------------

| Specification |
| --- |
| [ECMAScript (ECMA-262)  
The definition of 'Boolean constructor' in that specification.](https://tc39.es/ecma262/#sec-boolean-constructor) |

Browser compatibility
---------------------

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out [https://github.com/mdn/browser-compat-data](https://github.com/mdn/browser-compat-data) and send us a pull request.

[Update compatibility data on GitHub](https://github.com/mdn/browser-compat-data)

|  | Desktop | Mobile | Server |
| --- | --- | --- | --- |
|  | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Firefox for Android | Opera for Android | Safari on iOS | Samsung Internet | Node.js |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| `Boolean()` constructor | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 3 | Opera Full support 4 | Safari Full support 1 | WebView Android Full support 1 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |

#### What happens next?

Our team will review your report. Once we verify the information you have supplied we will update this browser compatability table accordingly.

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You can join the GitHub repository to see updates and commits for this table data:

[https://github.com/mdn/browser-compat-data](https://github.com/mdn/browser-compat-data)

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Thank you for helping.

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### Legend

Full support 

Full support

See also
--------

*   [Boolean](chrome-extension://cjedbglnccaioiolemnfhjncicchinao/en-US/docs/Glossary/Boolean)

[Source](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean/Boolean)