Object

In computer science, an object is a programming element that has state, has associated operations and is accessed via an identifier. Object is a categorization into which many programming concepts fall. For example, an object can be a programming language variable, data structure, function, or method.

From Object MDN The Object type represents one of JavaScript's data types. It is used to store various keyed collections and more complex entities. Objects can be created using the Object() constructor or the object initializer / literal syntax. Description Nearly all objects in JavaScript are instances of Object; a typical object inherits properties (including methods) from Object.prototype, although these properties may be shadowed (a.k.a. overridden). The only objects that don't inherit from Object.prototype are those with null prototype, or descended from other null prototype objects. Changes to the Object.prototype object are seen by all objects through prototype chaining, unless the properties and methods subject to those changes are overridden further along the prototype chain. This provides a very powerful although potentially dangerous mechanism to override or extend object behavior. To make it more secure, Object.prototype is the only object in the core JavaScript language that has immutable prototype — the prototype of Object.prototype is always null and not changeable. Object prototype properties You should avoid calling any Object.prototype method directly from the instance, especially those that are not intended to be polymorphic (i.e. only its initial behavior makes sense and no descending object could override it in a meaningful way). All objects descending from Object.prototype may define a custom own property that has the same name, but with entirely different semantics from what you expect. Furthermore, these properties are not inherited by null-prototype objects. All modern JavaScript utilities for working with objects are static.

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