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November 25, 2020 01:58
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JS Destructuring - Object destructuring*
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// Destructuring Assignment | |
let a, b; | |
[a, b] = [100, 200]; | |
// Basic + (rest) | |
[a, b, c, ...rest] = [100, 200, 300, 400, 500]; | |
// # OBJECT # + (rest) | |
({ a, b, ...rest } = { a: 100, b: 200, c: 300, d: 400, e: 500 }); | |
// Array | |
const people = ['John', 'Beth', 'Mike']; | |
const [person1, person2, person3] = people; | |
// Parse array returned from function | |
function getPeople() { | |
return ['John', 'Beth', 'Mike']; | |
} | |
let person1, person2, person3; | |
[person1, person2, person3] = getPeople(); | |
console.log(person1); | |
// ---------------------------------------------------------------------------- | |
// * Object Destructuring * | |
const person = { | |
name: 'John Doe', | |
age: 32, | |
city: 'Miami', | |
gender: 'Male', | |
sayHello: function () { | |
console.log('Hello'); | |
} | |
}; | |
// Old ES5 | |
// const name = person.name, | |
// age = person.age, | |
// city = person.city; | |
// NEW ES6 | |
const { name, age, city, sayHello } = person; | |
sayHello(); |
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