What are classes in ES6?

In ES6, Javascript classes are primarily syntactic sugar over JavaScript’s existing prototype-based inheritance. For example, the prototype-based inheritance written in function expression as below,

function Bike(model,color) {

this.model = model;

this.color = color;} Bike.prototype.getDetails = function() {

return this.model + ' bike has' + this.color + ' color';};

Whereas ES6 classes can be defined as an alternative

class Bike{

constructor(color, model) {

this.color= color;

this.model= model;

}

getDetails() {

return this.model + ' bike has' + this.color + ' color';

}}