Array methods

map, filter, find, sort, slice, reduce, and more — 10 exercises

Exercise 1 / 10

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Exercise 1/ 10

.map((x) => …)

RuleTakes items one at a time and makes a "new array" of reshaped items. The number of items stays the same

Data（items）

const items = [
  { id: 1, name: "Earphones", price: 3000, stock: 5 },
  { id: 2, name: "Bottle", price: 800, stock: 0 },
  { id: 3, name: "Backpack", price: 5000, stock: 2 },
  { id: 4, name: "Notebook", price: 300, stock: 10 },
]

Example

// An array of each price × 2
items.map((item) => item.price * 2)

→ [6000, 1600, 10000, 600]

The stock of each item after 10 more of each arrive

In plain words：Look at each item one at a time and make a new array where each item is turned into its stock plus 10

Expected result[15, 10, 12, 20]

JavaScript

Solve it to continue