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

Syntax

Symbol().valueOf();

Return value

The primitive value of the specified Symbol object.

Description

The valueOf method of Symbol returns the primitive value of a Symbol object as a Symbol data type.

JavaScript calls the valueOf method to convert an object to a primitive value. You rarely need to invoke the valueOf method yourself; JavaScript automatically invokes it when encountering an object where a primitive value is expected.

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Symbol.prototype.valueOf' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Symbol.prototype.valueOf' in that specification.
Draft  

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome Full support 38Edge Full support 12Firefox Full support 36IE No support NoOpera Full support 25Safari Full support 9WebView Android Full support YesChrome Android Full support 38Edge Mobile Full support YesFirefox Android Full support 36Opera Android Full support 25Safari iOS Full support 9Samsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support
No support  
No support

See also

Document Tags and Contributors

Contributors to this page: fscholz, jameshkramer, kdex, eduardoboucas
Last updated by: fscholz,