The Proxy.revocable() method is used to create a revocable Proxy object.


Proxy.revocable(target, handler);


A target object (can be any sort of object, including a native array, a function or even another proxy) to wrap with Proxy.
An object whose properties are functions which define the behavior of the proxy when an operation is performed on it.

Return value

A newly created revocable Proxy object is returned.


A revocable Proxy is an object with following two properties {proxy: proxy, revoke: revoke}.

A Proxy object created with new Proxy(target, handler) call.
A function with no argument to invalidate (switch off) the proxy.

If the revoke() function gets called, the proxy becomes unusable: Any trap to a handler will throw a TypeError. Once a proxy is revoked, it will remain revoked and can be garbage collected. Calling revoke() again has no effect.


var revocable = Proxy.revocable({}, {
  get: function(target, name) {
    return "[[" + name + "]]";
var proxy = revocable.proxy;
console.log(; // "[[foo]]"


console.log(; // TypeError is thrown = 1           // TypeError again
delete;       // still TypeError
typeof proxy            // "object", typeof doesn't trigger any trap


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes34 No Yes10
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes34 Yes10 Yes

See also

Document Tags and Contributors

Last updated by: fscholz,