Object.prototype.__parent__

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.

Obsolete since Gecko 2 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The __parent__ property used to point to an object's context, but it has been removed.

Syntax

obj.__parent__

Description

For top-level objects, this is the e.g. window.

Specifications

Not part of any specifications.

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
__parent__
DeprecatedNon-standard
Chrome No support NoEdge No support NoFirefox No support NoIE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoFirefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support Nonodejs No support No

Legend

No support  
No support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

See also

相關主題
  1. Standard built-in objects
  2. Object
  3. Properties
    1. Object.prototype.__count__
    2. Object.prototype.__noSuchMethod__
    3. Object.prototype.__parent__
    4. Object.prototype.__proto__
    5. Object.prototype.constructor
  4. Methods
    1. Object.assign()
    2. Object.create()
    3. Object.defineProperties()
    4. Object.defineProperty()
    5. Object.entries()
    6. Object.freeze()
    7. Object.fromEntries()
    8. Object.getNotifier()
    9. Object.getOwnPropertyDescriptor()
    10. Object.getOwnPropertyDescriptors()
    11. Object.getOwnPropertyNames()
    12. Object.getOwnPropertySymbols()
    13. Object.getPrototypeOf()
    14. Object.is()
    15. Object.isExtensible()
    16. Object.isFrozen()
    17. Object.isSealed()
    18. Object.keys()
    19. Object.observe()
    20. Object.preventExtensions()
    21. Object.prototype.__defineGetter__()
    22. Object.prototype.__defineSetter__()
    23. Object.prototype.__lookupGetter__()
    24. Object.prototype.__lookupSetter__()
    25. Object.prototype.eval()
    26. Object.prototype.hasOwnProperty()
    27. Object.prototype.isPrototypeOf()
    28. Object.prototype.propertyIsEnumerable()
    29. Object.prototype.toLocaleString()
    30. Object.prototype.toSource()
    31. Object.prototype.toString()
    32. Object.prototype.unwatch()
    33. Object.prototype.valueOf()
    34. Object.prototype.watch()
    35. Object.seal()
    36. Object.setPrototypeOf()
    37. Object.unobserve()
    38. Object.values()
  5. Inheritance:
  6. Function
  7. Properties
    1. Function.arguments
    2. Function.arity
    3. Function.caller
    4. Function.displayName
    5. Function.length
    6. Function.name
  8. Methods
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.isGenerator()
    5. Function.prototype.toSource()
    6. Function.prototype.toString()