Shopping Cart in JavaScript

1class ShoppingCart {
2    constructor() { this.items = []; }
3    add(item) { this.items.push(item); }
4    remove(id) { this.items = this.items.filter(i => i.id !== id); }
5    getTotal() { return this.items.reduce((sum, item) => sum + item.price, 0); }
6}