freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-objects/index.md

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title: Use Destructuring Assignment to Assign Variables from Objects
---

## Use Destructuring Assignment to Assign Variables from Objects

# This challenge requires some intuition about string objects in javascript. 

When you create a string object it is based on the following <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/prototype">string prototype</a>. 

Thus, each string has a length property; genericString = {length: 13}. (This is the only adopted property from the String.prototype.)

# Reassign properties using deconstruction. 
```javascript
var basicObj = {x: 40};
//To reassign 'get the value of the x property of basicObj and place its value into bigX' in ES6:
const { x: bigX } = basicObj;
console.log(bigX) // ans = 40 
```
Place the value of the length property of 'str' into len.