Proxy handler
The proxy's handler object is a placeholder object which contains traps for proxies.
Methods
All traps are optional. If a trap has not been defined, the default behavior is to forward the operation to the target.
handler.getPrototypeOf()
(en-US)-
A trap for
Object.getPrototypeOf
. handler.setPrototypeOf()
(en-US)-
A trap for
Object.setPrototypeOf
. handler.isExtensible()
(en-US)-
A trap for
Object.isExtensible
. handler.preventExtensions()
(en-US)-
A trap for
Object.preventExtensions
. handler.getOwnPropertyDescriptor()
-
A trap for
Object.getOwnPropertyDescriptor
. handler.defineProperty()
(en-US)-
A trap for
Object.defineProperty
. handler.has()
(en-US)-
A trap for the
in
operator. handler.get()
(en-US)-
A trap for getting property values.
handler.set()
-
A trap for setting property values.
handler.deleteProperty()
(en-US)-
A trap for the
delete
operator. handler.ownKeys()
(en-US)-
A trap for
Object.getOwnPropertyNames
andObject.getOwnPropertySymbols
. handler.apply()
(en-US)-
A trap for a function call.
handler.construct()
(en-US)-
A trap for the
new
operator.
Some non-standard traps are obsolete and have been removed.
Especificaciones
Specification |
---|
ECMAScript Language Specification # sec-proxy-constructor |
Browser compatibility
BCD tables only load in the browser