handler.setPrototypeOf()

The handler.setPrototypeOf() method is a trap for Object.setPrototypeOf().

Syntax

var p = new Proxy(target, {
  setPrototypeOf: function(target, prototype) {
  }
});

Parameters

The following parameters are passed to the setPrototypeOf method. this is bound to the handler.

target

The target object.

prototype

The object's new prototype or null.

Return value

The setPrototypeOf method does not return a value.

Description

The handler.setPrototypeOf method is a trap for Object.setPrototypeOf().

Interceptions

This trap can intercept these operations:

• Object.setPrototypeOf()
• Reflect.setPrototypeOf()

Invariants

If the following invariants are violated, the proxy will throw a TypeError:

• If target is not extensible, the prototype parameter must be the same value as Object.getPrototypeOf(target).

Examples

Specifications

Browser compatibility

See also

• Proxy
• handler
• Object.setPrototypeOf()
• Reflect.setPrototypeOf()