Object Methods

Intro to Object Methods
Intro to Object Methods
Objects are great for grouping related data, but the real power shows up when you need to transform that data. JavaScript gives you several built-in methods to do exactly that.

The Core Methods

Object.keys - Get the property names

const user = { name: 'Ada', role: 'admin' }
const keys = Object.keys(user)
// ['name', 'role']

Object.values - Get the property values

const values = Object.values(user)
// ['Ada', 'admin']

Object.entries - Get key/value pairs

const entries = Object.entries(user)
// [['name', 'Ada'], ['role', 'admin']]

Object.fromEntries - Build an object from entries

const pairs = [
	['name', 'Ada'],
	['role', 'admin'],
]
const rebuilt = Object.fromEntries(pairs)
These methods let you switch between objects and arrays so you can use array methods like map, filter, and reduce for transformations.
In this exercise, you'll practice using object methods to read and transform object data.
EditStart Learning