ES6: Object destructing

Introduction

In this blog article, we shall learn about Object destructing in JavaScript. Object destructuring syntax was introduced in ES6 to make accessing Object properties much easier and cleaner

Object destructing

In pre-ES6, normally you'd read object properties and store the values associated to these properties in a variable like this:

// some code omitted const result = { userId: 'dummy_id_001`, username: 'foo_bar' avatar: 'https://gravatar/xrkpxys/k1szh.png', accent: '#fff' } // reading a few properties off this object literal: pre-es6 var username = result.username var accent = result.accent 

In ES6, the above becomes:

// some code omitted const result = { userId: 'dummy_id_001`, username: 'foo_bar' avatar: 'https://gravatar/xrkpxys/k1szh.png', accent: '#fff' } // reading a few properties off this object literal: pre-es6 let {username, accent, userId} = result // now use username, accent as normal variables 

This is useful especially if you need to read more than one property from the same object.

Summary

Object destructuring syntax provides a cleaner way of accessing more than one property off an object literal.

Use object destructuring when accessing more than one property of an object and pre-ES6 syntax(using the "dot" operator) when accessing only one object.

// possible code ommitted const username = result.username // OK for single property const {accent, avatar, userId} = result // use object destructing 

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