typescript object destructuring
let { a, b }: { a: string; b: number } = o;typescript object destructuring
let { a, b }: { a: string; b: number } = o;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]}Nested destructuring in Javascript
const person = {
id: 0133,
name: "Robert",
positon: "web-developer",
salary: 8000,
pColor: "red",
pSports: "football",
pMovies: ["word war 1", "destroy the world", "long way", "Where is my home"],
pChild: {
firstChild: "Adiba",
secondChild: "Alvi"
}
}
const { secondChild } = person.pChild;
console.log(secondChild);
//Output: AlviCopyright © 2021 Codeinu
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