handler.get()

The handler.get() method is a trap for getting a property value.

Syntax

new Proxy(target, {
  get(target, property, receiver) {
  }
});

Parameters

The following parameters are passed to the get() method. this is bound to the handler.

• target
  • : The target object.
• property
  • : The name or Symbol of the property to get.
• receiver
  • : Either the proxy or an object that inherits from the proxy.

Return value

The get() method can return any value.

Description

The handler.get() method is a trap for getting a property value.

Interceptions

This trap can intercept these operations:

• Property access: proxy[foo] and proxy.bar
• Reflect.get()

Or any other operation that invokes the [[Get]] internal method.

Invariants

If the following invariants are violated, the trap throws a TypeError when invoked.

• The value reported for a property must be the same as the value of the corresponding target object property if the target object property is a non-writable, non-configurable own data property.
• The value reported for a property must be undefined if the corresponding target object property is a non-configurable own accessor property that has undefined as its [[Get]] attribute.