Learn Basic OOP by Building a Shopping Cart - Step 9

JavaScript
1

Tell us what’s happening: Hello , I don’t understand what is the destructuration in javascript

`const cartContainer = document.getElementById(“cart-container”);

const productsContainer = document.getElementById(“products-container”);
const dessertCards = document.getElementById(“dessert-card-container”);
const cartBtn = document.getElementById(“cart-btn”);
const clearCartBtn = document.getElementById(“clear-cart-btn”);
const totalNumberOfItems = document.getElementById(“total-items”);
const cartSubTotal = document.getElementById(“subtotal”);
const cartTaxes = document.getElementById(“taxes”);
const cartTotal = document.getElementById(“total”);
const showHideCartSpan = document.getElementById(“show-hide-cart”);
let isCartShowing = false;

const products = [
{
id: 1,
name: “Vanilla Cupcakes (6 Pack)”,
price: 12.99,
category: “Cupcake”,
},
{
id: 2,
name: “French Macaron”,
price: 3.99,
category: “Macaron”,
},
{
id: 3,
name: “Pumpkin Cupcake”,
price: 3.99,
category: “Cupcake”,
},
{
id: 4,
name: “Chocolate Cupcake”,
price: 5.99,
category: “Cupcake”,
},
{
id: 5,
name: “Chocolate Pretzels (4 Pack)”,
price: 10.99,
category: “Pretzel”,
},
{
id: 6,
name: “Strawberry Ice Cream”,
price: 2.99,
category: “Ice Cream”,
},
{
id: 7,
name: “Chocolate Macarons (4 Pack)”,
price: 9.99,
category: “Macaron”,
},
{
id: 8,
name: “Strawberry Pretzel”,
price: 4.99,
category: “Pretzel”,
},
{
id: 9,
name: “Butter Pecan Ice Cream”,
price: 2.99,
category: “Ice Cream”,
},
{
id: 10,
name: “Rocky Road Ice Cream”,
price: 2.99,
category: “Ice Cream”,
},
{
id: 11,
name: “Vanilla Macarons (5 Pack)”,
price: 11.99,
category: “Macaron”,
},
{
id: 12,
name: “Lemon Cupcakes (4 Pack)”,
price: 12.99,
category: “Cupcake”,
},
];

products.forEach(
(element) => {element.id, element.name, element.price, element.category}
);`

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Challenge Information:

Learn Basic OOP by Building a Shopping Cart - Step 9

2

Hello!

it basically means extracting parts of an object or array that you need and using them, in this case as arguments for the callback function.

Example:

const fooArray = [ Hi, and, Hello, I am, from, the, array, called, fooArray]


fooArray.forEach( {Hello, I am, from, fooArray} ) => { }

Watch the syntax: You have to turn the properties you are extracting into an object.

3

Hello, I am doing like you but it doesn’t work.

4

Show us the new code please.

5 
const cartContainer = document.getElementById("cart-container");
const productsContainer = document.getElementById("products-container");
const dessertCards = document.getElementById("dessert-card-container");
const cartBtn = document.getElementById("cart-btn");
const clearCartBtn = document.getElementById("clear-cart-btn");
const totalNumberOfItems = document.getElementById("total-items");
const cartSubTotal = document.getElementById("subtotal");
const cartTaxes = document.getElementById("taxes");
const cartTotal = document.getElementById("total");
const showHideCartSpan = document.getElementById("show-hide-cart");
let isCartShowing = false;

const products = [
  {
    id: 1,
    name: "Vanilla Cupcakes (6 Pack)",
    price: 12.99,
    category: "Cupcake",
  },
  {
    id: 2,
    name: "French Macaron",
    price: 3.99,
    category: "Macaron",
  },
  {
    id: 3,
    name: "Pumpkin Cupcake",
    price: 3.99,
    category: "Cupcake",
  },
  {
    id: 4,
    name: "Chocolate Cupcake",
    price: 5.99,
    category: "Cupcake",
  },
  {
    id: 5,
    name: "Chocolate Pretzels (4 Pack)",
    price: 10.99,
    category: "Pretzel",
  },
  {
    id: 6,
    name: "Strawberry Ice Cream",
    price: 2.99,
    category: "Ice Cream",
  },
  {
    id: 7,
    name: "Chocolate Macarons (4 Pack)",
    price: 9.99,
    category: "Macaron",
  },
  {
    id: 8,
    name: "Strawberry Pretzel",
    price: 4.99,
    category: "Pretzel",
  },
  {
    id: 9,
    name: "Butter Pecan Ice Cream",
    price: 2.99,
    category: "Ice Cream",
  },
  {
    id: 10,
    name: "Rocky Road Ice Cream",
    price: 2.99,
    category: "Ice Cream",
  },
  {
    id: 11,
    name: "Vanilla Macarons (5 Pack)",
    price: 11.99,
    category: "Macaron",
  },
  {
    id: 12,
    name: "Lemon Cupcakes (4 Pack)",
    price: 12.99,
    category: "Cupcake",
  },
];

products.forEach(
  ({id, name, price, category}) => {}
);
6

I solved the issue thank you for your help.

1 Like
7

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