object destructuring example
const hero = {
name: 'Batman',
realName: 'Bruce Wayne',
address: {
city: 'Gotham'
}
};
// Object destructuring:
const { realName, address: { city } } = hero;
city; // => 'Gotham'object destructuring example
const hero = {
name: 'Batman',
realName: 'Bruce Wayne',
address: {
city: 'Gotham'
}
};
// Object destructuring:
const { realName, address: { city } } = hero;
city; // => 'Gotham'JavaScript nested destructuring
// Destructuring an object > array > object structure
const returnedObject = {
docsArray: [
{socketRoom: '', routes: []},
{socketRoom: '', routes: []},
{socketRoom: '', routes: []},
]
}
// this will destructure the first and second elements from docsArray, and spread the remainder
const {docsArray: [element0, element1, ...remainder]} = returnedObject
// taking this further with destructing properties from element0
const {docsArray: [{socketRoom0, routes0} = element0, {socketRoom1, routes1} = element1]} = returnedObject
// note the syntax for destructing Objects and Arrays
const {propName} = Object
const [element0, element1] = Array
// then one layer deep where Object[propName] is an Array
const {propName: [element0]} = Object
// then two layers, where element0 is an Object
const {propName: [{propName} = element0]}
// three layers
const {propName: [{propName: [element00]} = element0]}Copyright © 2021 Codeinu
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