JS: Object.prototype

By Xah Lee. Date: . Last updated: .

Object.prototype is the value of the property key "prototype" of the function Object.

[see JS: Object Object]

console.log( Object.hasOwnProperty ( "prototype" ) ); // true

Type

Type of Object.prototype is object.

[see JS: Value Types]

console.log ( typeof Object.prototype === "object" ); // true

Parent

Parent of Object.prototype is null.

console.log ( Reflect.getPrototypeOf ( Object.prototype ) === null ); // true

[see JS: Prototype and Inheritance]

Purpose

Object.prototype is the root parent of all standard objects.

So, for any property key k of Object.prototype, you can access it by obj.k where obj is any object. If the object obj has k as its own property, the own property is used.

Properties

Function Properties

Data Property

Getter/Setter Property


Object.prototype.toLocaleString

ECMAScript 2015 §Fundamental Objects#sec-object.prototype.tolocalestring

JS Object and Inheritance

  1. Object Overview
  2. Object Type
  3. Find Object's Type
  4. Prototype Chain
  5. Create Object
  6. Object Literal Expr
  7. Create Object with Parent X
  8. Get/Set Parent
  9. Show Prototype Chain
  10. Prevent Adding Property
  11. Clone Object
  12. Test Object Equality
  13. Add Method to Prototype

Like it? Help me by telling your friends. Or, Put $5 at patreon.

Or, Buy JavaScript in Depth

If you have a question, put $5 at patreon and message me.

Web Dev Tutorials