Web/JavaScript/Reference/Global objects/BigInt/valueOf

The valueOf() method returns the wrapped primitive value of a BigInt object.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

bigIntObj.valueOf()

Return value

A BigInt representing the primitive value of the specified BigInt object.

Examples

Using valueOf

typeof Object(1n); // object
typeof Object(1n).valueOf(); // bigint

Specifications

Specification

ECMAScript (ECMA-262)The definition of 'BigInt.prototype.valueOf()' in that specification.

Browser compatibility

The compatibility table in 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 and send us a pull request.

Update compatibility data on GitHub

	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
valueOf	Chrome Full support 67	Edge Full support 79	Firefox Full support 68	IE No support No	Opera Full support 54	Safari Full support 14	WebView Android Full support 67	Chrome Android Full support 67	Firefox Android Full support 68	Opera Android Full support 48	Safari iOS Full support 14	Samsung Internet Android Full support 9.0	nodejs Full support 10.4.0

Legend

Full support  

Full support

No support  

No support

See also

• BigInt.prototype.toString()

BigInt.prototype.valueOf() by Mozilla Contributors is licensed under CC-BY-SA 2.5.