object destructuring
const book = {
title: 'Ego is the Enemy',
author: 'Ryan Holiday',
publisher: {
name: 'Penguin',
type: 'private'
}
};
const {title: bookName = 'Ego', author, name: {publisher: { name }} = book, type: {publisher: { type }} = book } = book;Object destructuring
Object Destructuring =>
//
The destructuring assignment syntax is a JavaScript expression that makes it
possible to unpack values from arrays,
or properties from objects, into distinct variables.
//
example:
const user = {
id: 42,
is_verified: true
};
const {id, is_verified} = user;
console.log(id); // 42
console.log(is_verified); // truedestructured object
let renseignement = ['voleur' , '10' , 'spécialité'] ;
let [classe , force, magie] = renseignement ;
console.log(classe) ;
console.log(force) ;
console.log(magie) ;Array Destructuring
const foo = ['one', 'two', 'three'];
const [red, yellow, green] = foo;
console.log(red); // "one"
console.log(yellow); // "two"
console.log(green); // "three"js-destructuring
const getTemperature = (atticData) => atticData?.celsius ?? 15;
// insted do
const getTemperature = ({ celsius = 15 } = {}) => celsius;
// https://realworldjs.medium.com/never-use-the-dot-operator-in-javascript-ee0339d85fbjavascript destructuring
const classDetails = {
strength: 78,
benches: 39,
blackBoard:1
}
const {strength:classStrength, benches:classBenches,blackBoard:classBlackBoard} = classDetails;
console.log(classStrength); // Outputs 78
console.log(classBenches); // Outputs 39
console.log(classBlackBoard); // Outputs 1Copyright © 2021 Codeinu
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