Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The toSource() method returns a string representing the source code of the object.

This method is usually called internally by JavaScript.

Syntax

Symbol.toSource()

var sym = Symbol()
sym.toSource()

Return value

A string representing the source code of the object.

Description

The toSource method returns the following values:

For the built-in Symbol object, toSource returns the following string indicating that the source code is not available:

"function Symbol() {
   [native code]
}"

For instances of Symbol, toSource returns a string representing the source code.

"Symbol()"

Specifications

Not part of any standard.

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic support
Non-standard
Chrome No support NoEdge No support NoFirefox Full support 36IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android Full support 36Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support Nonodejs No support No

Legend

Full support  
Full support
No support  
No support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

See also

Document Tags and Contributors

Contributors to this page: teoli, fscholz, eduardoboucas
Last updated by: teoli,