我需要将此代码转换为ES6，我在JS上是一个新手，不确定如何

Question

I'm new on JS and not very familiar with the old version, I have this test that I need to convert into Es6. Does anyone could help me to understand how I can do this?

'use strict';
function Shape(id, x, y) {
 this.id = id;
 this.setLocation(x, y);
}
Shape.prototype.setLocation = function(x, y) {
 this.x = x;
 this.y = y;
};
Shape.prototype.getLocation = function() {
 return {
 x: this.x,
 y: this.y
 };
};
Shape.prototype.toString = function() {
 return 'Shape(' + this.id + ')';
};
function Circle(id, x, y, radius) {
 Shape.call(this, id, x, y);
 this.radius = radius;
}
Circle.prototype = Object.create(Shape.prototype);
Circle.prototype.constructor = Circle;
Circle.prototype.toString = function() {
 return 'Circle > ' + Shape.prototype.toString.call(this);
};

Answer 1

Converted to classes :

 class Shape { constructor(id, x, y) { this.id = id; this.setLocation(x, y); } setLocation(x, y) { this.x = x; this.y = y; } getLocation = () => ({ x: this.x, y: this.y }) toString() { return `Shape(${this.id})`; } } class Circle extends Shape { constructor(id, x, y, radius) { super(id, x, y) this.radius = radius; } toString() { return `Circle> ${super.toString()}`; } } let shape = new Shape('shape', 5, 5); let circle = new Circle('circle', 6, 6, 6); console.log("Shape()", shape.getLocation(), shape.toString() ); console.log("Circle()", circle.getLocation(), circle.toString() ); 

Hope this helps,