Reflect.isExtensible()

The static Reflect.isExtensible() method determines if an object is extensible (whether it can have new properties added to it). It is similar to Object.isExtensible(), but with some differences.

Syntax

Reflect.isExtensible(target)

Parameters

• target
  • : The target object which to check if it is extensible.

Return value

A Boolean indicating whether or not the target is extensible.

Exceptions

A TypeError, if target is not an Object.