JavaScript: Prototype VS Classes

Source: https://medium.com/@parsyval/javascript-prototype-vs-class-a7015d5473b

Object / Prototype

• Constructor-like function
• Use of New to add instance of the prototype
• Objects inherit from other objects
• The custom one inherit from higher generic Object
• Has __proto__ object with function
• Created Instances are REFERENCES to the Prototype - changing the __proto__ of an object, changes the class and all objects

Class

• ES6 Classes are 'syntactic sugar' for Prototypes
  • It has extends, constructor, super, static classes
  • But still uses __proto__ underneath the hood and is based on references
  • A Class is of type function