Several things JavaScript objects can do

Besides normal object property assignment and traversal, we can perform many other operations with Javascript objects. In this article, we’ll see how to use them, including accessing internal properties, manipulating property descriptors, and inheriting read-only properties. 1. Accessing internal properties Internal properties of Javascript objects that cannot be accessed in the normal way. Internal property names are surrounded by square brackets [[ ]] and are available at object creation time. Internal properties cannot be dynamically added to existing objects. Internal properties are available on certain built-in Javascript objects that store internal state as specified by the ECMAScript specification. There are two internal properties, a method for manipulating objects, and a method for storing data. For example: [[Prototype]] — prototype of the object, can be null or object [[Extensible]] — Indicates whether new properties are allowed to be dynamically added to the object [[PrivateFieldValues]] — Used to manage private class fields 2. Attribute Descriptor Object The data attribute contains the location of a data value, which can be read and written value. That is to say, data attributes can be accessed through object.attribute, that is, what value is assigned by the user we usually contact, they will return what is, and…