javascript deconstruction code example
Example 1: Destructuring Assignment
const HIGH_TEMPERATURES = {
yesterday: 75,
today: 77,
tomorrow: 80
};
const {today, tomorrow} = HIGH_TEMPERATURES;
const today = HIGH_TEMPERATURES.today;
const tomorrow = HIGH_TEMPERATURES.tomorrow;
console.log(today);
console.log(tomorrow);
console.log(yesterday);
Example 2: 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;
Example 3: javascript deconstruct object
const objA = {
prop1: 'foo',
prop2: {
prop2a: 'bar',
prop2b: 'baz',
},
};
const { prop1, prop2: { prop2a, prop2b } } = objA;
console.log(prop1);
console.log(prop2a);
console.log(prop2b);
Example 4: javascript function destructuring
function f() {
return [1, 2];
}
let a, b;
[a, b] = f();
console.log(a);
console.log(b);