Classes
Overview
- Introduced in ECMAScript 2015 with the release of ES6
- Many OOP languages have classes (Java, Python, C++)
- Programmers decided they wanted the functionality of classes that other languages had.
- Problem was, JavaScript is based a prototype based language as opposed to an Object Oriented Language
What is a Class?
In JavaScript, a class is syntactical sugar for a function that creates an object.
Javascript uses prototypal inheritance: every object inherits properties & methods from its prototype object.
Prototypal Inheritance Link
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain
Classes make thinking about Inheritance easier if you don't come from a previous language
function Auto(numWheels){
this.numWheels = numWheels
this.type = type
}
Before classes in JavaScript you had constructor functions that looked like this: