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.

Syntax

numObj.toSource()
Number.toSource()

Return value

A string representing the source code of the object.

Description

The toSource() method returns the following values:

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

function Number() {
    [native code]
}

For instances of Number, toSource() returns a string representing the source code.

This method is usually called internally by JavaScript and not explicitly in web code.

Specifications

Not part of any standard. Implemented in JavaScript 1.3.

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
Basic support
Non-standard
Chrome No support NoEdge No support NoFirefox Full support 1IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android Full support 4Opera 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

Last updated by: fscholz,