Nested objects destructuring Destructuring a part of the object The destructuring assignment is a very useful addition to ES6 that allows us to extract values from arrays , or properties from objects , into a bunch of distinct variables. When destructuring nested objects we can destructure them by nesting as the objects or arrays are nested. Obviously this can get pretty messy pretty quickly so feel free to destructure more than once if order to keep your code clean. function someFunction({ current: { selectionStart: Start, selectionEnd: End } }, AppStateSetter) { // do something with current, Start, and End } Here is a quick example to illustrate this. If an object or an array contain other nested objects and arrays, we can use more complex left-side patterns to extract deeper portions. The corresponding item must be an array in order to use a nested destructuring array literal to assign items in it to local variables. In the code below options has another object in the property size and an array in the property items. This article will go over the basics of destructuring objects and how it applies to props in React. Let’s recap. With React, which fully embraces the ES6 syntax, destructuring adds a slew of benefits to improving your code. In the below function, I get the textarea object with the property current. Object Destructuring in a Nutshell The destructuring assignment syntax is a JavaScript expression that makes it possible to unpack values from arrays, or properties from objects, into distinct variables. You saw how to destructure objects (with nested objects), rename variables, assign default values, how destructuring applies to function arguments (and thus to components in React), dynamic destructuring, destructuring arrays, skipping array items and also how to use the rest parameter with both objects and arrays. Just as with objects, you can also do nested destructuring with arrays. Default parameters can also be used with destructuring, ... Just like with arrays, this will only create a shallow copy, and nested objects will still be passed by reference. To give you some insight into what I’m describing, let me back up just a minute and go over what object destructuring in JavaScript is, and why it’s a little daunting once your objects get complex. The source for this interactive example is stored in a GitHub repository. Nested Array Destructuring. The Issue: ES6 Object Destructuring & Deeply Nested Objects. With Nested Destructuring, you can cherry pick properties to get from as many levels down in your object as you need. When we have the property, then we can break it into smaller parts by destructuring. Nested destructuring. Object destructuring and array destructuring can be combined in a single destructuring assignment. But current variable doesn't work. 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