Proxy.constructor

The Proxy constructor.

Syntax

new Proxy(target, handler)

Parameters

• target

  The target object to wrap with Proxy.

• handler

  An object whose properties are functions which define the behavior of the proxy when an operation is performed on it.

  Handler objects can define the following properties:

  • apply function(target, thisArg, argumentsList)

  Intercepts calls to the proxy when it is used as a function.

  • construct function(target, argumentsList, newTarget)

  Intercepts calls to the proxy when it is used as a constructor.

  • defineProperty function(target, property, descriptor)

  Intercepts calls to the proxy when a property is defined.

  • deleteProperty function(target, property)

  Intercepts calls to the proxy when a property is deleted.

  • get function(target, property, receiver)

  Intercepts calls to the proxy when a property is read.

  • getOwnPropertyDescriptor function(target, property)

  Intercepts calls to the proxy when a property descriptor is requested.

  • getPrototypeOf function(target)

  Intercepts calls to the proxy when the prototype of the target object is requested.

  • has function(target, property)

  Intercepts calls to the proxy when the in operator is used on the proxy.

  • isExtensible function(target)

  Intercepts calls to the proxy when the Object.isExtensible method is called on the proxy.

  • ownKeys function(target)

  Intercepts calls to the proxy when the Object.getOwnPropertyNames method is called on the proxy.

  • preventExtensions function(target)

  Intercepts calls to the proxy when the Object.preventExtensions method is called on the proxy.

  • set function(target, property, value, receiver)

  Intercepts calls to the proxy when a property is set.

  • setPrototypeOf function(target, prototype)

  Intercepts calls to the proxy when the Object.setPrototypeOf method is called on the proxy.

Return value

A new Proxy object.