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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.



Return value

A string representing the source code of the given Date object.


The toSource() method returns the following values:

  • For the built-in Date object, toSource() returns the following string indicating that the source code is not available:
    function Date() {
        [native code]
  • For instances of Date, toSource() returns a string representing the source code.

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


Not part of any standard. Implemented in JavaScript 1.3.

Browser compatibility

FeatureChromeFirefoxEdgeInternet ExplorerOperaSafari
Basic Support(No)(Yes)(No)(No)(No)(No)
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support(No)(No)(No)(Yes)(No)(No)(No)

See also

Document Tags and Contributors

 Contributors to this page: fscholz, eduardoboucas, Mingun, Sheppy, ethertank, evilpie, Sevenspade, Ptak82, Maian, Dria
 Last updated by: fscholz,